{"id":21192,"date":"2026-09-10T09:12:19","date_gmt":"2026-09-10T01:12:19","guid":{"rendered":"https:\/\/synopower.club\/?p=21192"},"modified":"2026-09-10T20:51:41","modified_gmt":"2026-09-10T12:51:41","slug":"synology-mailplus-mail-server-guide","status":"publish","type":"post","link":"https:\/\/synopower.club\/pt\/synology-mailplus-mail-server-guide\/","title":{"rendered":"Synology MailPlus: O Guia Completo para Gerenciar Seu Pr\u00f3prio Servidor de E-mail"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Email is the last piece of business infrastructure most companies still rent by the seat, every month, forever. <strong>MailPlus<\/strong> is Synology&rsquo;s answer to that: a full mail server package that runs on a NAS you already own, serves your own domain, and is licensed once instead of per user per month. Every installation starts with five email accounts at no cost, and you buy capacity in packs only when you actually need more mailboxes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide covers what the package really is, what it costs against Google Workspace and Microsoft 365 at a hundred users, which Synology models can run it, how to get the DNS right so your mail is not silently binned as spam, and the limits worth knowing before you move a company&rsquo;s mail onto hardware in your own rack.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">We have deployed MailPlus for organisations from 370 to 1,500 users, and the part that decides success is never the installer &mdash; it is DNS and IP reputation. The package sets up in an afternoon. Getting SPF, DKIM, DMARC and reverse DNS right, and knowing whether your ISP blocks outbound port 25, is what separates a mail server that works from one that quietly lands in junk folders for six weeks. Plan that part first.<\/p>\n<cite>SynoPower Club &mdash; Synology MailPlus deployment notes<\/cite><\/blockquote>\n\n\n\n<nav class=\"stk-block stk-block-table-of-contents\"><ul class=\"stk-block-table-of-contents__list\"><li><a href=\"#what-is-mailplus\">What Is MailPlus?<\/a><\/li><li><a href=\"#mailplus-vs-google-workspace-and-microsoft-365-the-real-trade\">MailPlus vs Google Workspace and Microsoft 365: The Real Trade<\/a><\/li><li><a href=\"#what-you-need-before-you-start\">O que voc\u00ea precisa antes de come\u00e7ar<\/a><\/li><li><a href=\"#setting-up-a-mailplus-mail-server-in-4-steps\">Setting Up a MailPlus Mail Server in 4 Steps<\/a><\/li><li><a href=\"#how-mailplus-licensing-works-5-free-accounts-then-packs-of-5-or-20\">How MailPlus Licensing Works: 5 Free Accounts, Then Packs of 5 or 20<\/a><\/li><li><a href=\"#which-synology-nas-models-can-run-mailplus\">Which Synology NAS Models Can Run MailPlus?<\/a><\/li><li><a href=\"#why-dns-decides-whether-your-mail-actually-arrives\">Why DNS Decides Whether Your Mail Actually Arrives<\/a><\/li><li><a href=\"#moving-existing-mail-from-gmail-or-microsoft-365\">Moving Existing Mail From Gmail or Microsoft 365<\/a><\/li><li><a href=\"#how-a-40-person-company-uses-mailplus\">How a 40-Person Company Uses MailPlus<\/a><\/li><li><a href=\"#where-to-find-more-official-resources\">Onde encontrar mais recursos oficiais<\/a><\/li><li><a href=\"#limits-to-know-before-you-trust-mailplus-with-business-mail\">Limits to Know Before You Trust MailPlus With Business Mail<\/a><\/li><li><a href=\"#references\">Refer\u00eancias<\/a><\/li><li><a href=\"#frequently-asked-questions\">Perguntas frequentes<\/a><\/li><\/ul><\/nav>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-mailplus\">What Is MailPlus?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MailPlus is two packages that work together. <strong>Servidor MailPlus<\/strong> is the mail server itself &mdash; SMTP, IMAP, POP3, the anti-spam and antivirus engines, the admin console and the account and domain settings. <strong>MailPlus<\/strong> is the webmail client your users actually log into, with mobile apps for Android and iOS alongside it. Both install from Package Center and both are free to install; the licence governs only how many active email accounts the server may host.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because it runs on your NAS, the mailbox data sits on your storage, inside your existing snapshot and backup routine. There is no per-seat subscription, no data residency question to answer, and no annual renegotiation. You can host multiple domains on one server, keep shared mailboxes and shared address books, and run collaborative calendars and contacts without adding another vendor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is an SMB and enterprise product rather than a hobby project. The engine list is conventional and current: Rspamd for spam detection, ClamAV for antivirus, Google Safe Browsing for malicious link detection, with paid upgrades to Bitdefender and McAfee if you want them. Mainstream authentication is supported &mdash; SPF, DKIM, DMARC and DANE &mdash; and two NAS units can be paired into a high-availability cluster so mail keeps flowing through a hardware failure.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"mailplus-vs-google-workspace-and-microsoft-365-the-real-trade\">MailPlus vs Google Workspace and Microsoft 365: The Real Trade<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The honest comparison is not feature-for-feature &mdash; the hyperscalers win on breadth, and they run the infrastructure for you. The comparison that matters is cost curve versus operational responsibility.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Crit\u00e9rios<\/th><th>MailPlus on your NAS<\/th><th>Google Workspace \/ Microsoft 365<\/th><\/tr><\/thead><tbody><tr><td>Licence model<\/td><td>One-time, perpetual, free lifetime upgrades<\/td><td>Per user, per month, forever<\/td><\/tr><tr><td>100 users, 3 years<\/td><td>About USD 4,500 in licences (one-time)<\/td><td>Around USD 20,000 and counting<\/td><\/tr><tr><td>Year 4 onwards<\/td><td>USD 0<\/td><td>The same bill again<\/td><\/tr><tr><td>Where the data lives<\/td><td>Your NAS, your snapshots, your building<\/td><td>The provider&rsquo;s data centres<\/td><\/tr><tr><td>Who fixes deliverability<\/td><td>You (DNS, IP reputation, blocklists)<\/td><td>The provider<\/td><\/tr><tr><td>Hardware cost<\/td><td>A supported NAS, plus disks<\/td><td>Nenhum<\/td><\/tr><tr><td>Uptime responsibility<\/td><td>Yours &mdash; or an HA pair<\/td><td>Contractual SLA<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Licence maths uses current SynoPower Club prices: five accounts are free, so 100 users needs 95 more &mdash; four 20-user packs and three 5-user packs. Hardware and power are extra.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The trade is straightforward. You are exchanging a recurring bill for a capital purchase plus the job of running a mail server. If nobody in the organisation is willing to own DNS and deliverability, stay on a hosted provider &mdash; that is a legitimate answer. If you already run a NAS, already have someone comfortable in DSM, and the subscription line keeps growing, MailPlus pays for itself somewhere in the second year and then stops costing anything.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-you-need-before-you-start\">O que voc\u00ea precisa antes de come\u00e7ar<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A supported NAS with enough headroom.<\/strong> Plus-series and above, generally. The model decides how many registered and concurrent users are realistic &mdash; a DS620slim tops out around 250 users, while an FS6400 is rated for 17,500.<\/li>\n\n\n<li><strong>A domain you control the DNS for.<\/strong> Not just the domain &mdash; the DNS zone. You will be adding MX, SPF, DKIM and DMARC records.<\/li>\n\n\n<li><strong>A static public IP, or DDNS plus a plan.<\/strong> Residential dynamic IPs are frequently on blocklists before you even start.<\/li>\n\n\n<li><strong>Reverse DNS (PTR) you can get set.<\/strong> This one is your ISP&rsquo;s to configure, not yours. Ask before you commit.<\/li>\n\n\n<li><strong>Outbound port 25 that is not blocked.<\/strong> Many consumer ISPs block it outright. If yours does, you will be relaying through a smart host.<\/li>\n\n\n<li><strong>A backup that includes the mail spool.<\/strong> Mail is the data people notice losing fastest.<\/li>\n\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The third, fourth and fifth items are where most self-hosted mail projects quietly fail, and none of them are MailPlus problems &mdash; they are internet-plumbing problems that every mail server has. Confirm all three with your ISP before you migrate a single mailbox.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"setting-up-a-mailplus-mail-server-in-4-steps\">Setting Up a MailPlus Mail Server in 4 Steps<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The installation is genuinely quick. What follows is the order that avoids the common failure mode of sending live mail before authentication is in place, which is how a new domain earns a bad reputation in its first week.<\/p>\n\n\n<div id=\"rank-math-howto\" class=\"rank-math-block\" >\n<div class=\"rank-math-howto-description\">\n\n<\/div>\n\n<div class=\"rank-math-steps\">\n<div id=\"step-1\" class=\"rank-math-step\">\n<h3 class=\"rank-math-step-title\">Install MailPlus Server and claim the mail domain<\/h3>\n<div class=\"rank-math-step-content\"><p>Install both MailPlus Server and its webmail client from Package Center. In the server console open the domain settings and add the domain you will send from, then set the server&rsquo;s FQDN to a hostname that resolves publicly, such as mail.example.com. Do not enable accounts for real users yet. At this point you have five free accounts available and no licence is required.<\/p>\n<\/div>\n<\/div>\n<div id=\"step-2\" class=\"rank-math-step\">\n<h3 class=\"rank-math-step-title\">Point MX and SPF at the server, before anyone sends anything<\/h3>\n<div class=\"rank-math-step-content\"><p>In your DNS zone create an A record for the mail hostname, then an MX record for the domain pointing at that hostname. Add a single SPF TXT record authorising your public IP and nothing else, ending in -all once you are confident. Publishing SPF before the first outbound message is what stops your domain being classified as unauthenticated on day one.<\/p>\n<\/div>\n<\/div>\n<div id=\"step-3\" class=\"rank-math-step\">\n<h3 class=\"rank-math-step-title\">Generate DKIM in MailPlus Server, then publish DMARC<\/h3>\n<div class=\"rank-math-step-content\"><p>The server generates the DKIM key pair for you and shows the public key to paste into DNS as a TXT record on the selector. Enable DKIM signing for the domain and verify a test message is signed. Only then add a DMARC record, starting at p=none so you collect reports without bouncing legitimate mail, and tighten to quarantine or reject once the reports are clean.<\/p>\n<\/div>\n<\/div>\n<div id=\"step-4\" class=\"rank-math-step\">\n<h3 class=\"rank-math-step-title\">Turn on TLS and security, then test deliverability from outside<\/h3>\n<div class=\"rank-math-step-content\"><p>Issue a certificate for the mail hostname in DSM and bind it to the mail server so SMTP and IMAP are encrypted. Enable Rspamd, the antivirus engine and the SMTP connection limits. Then send a message to an external mailbox and to a third-party authentication checker, and confirm SPF, DKIM, DMARC and reverse DNS all pass before you migrate any real users.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Step four is not optional politeness. A domain that starts sending before SPF, DKIM and DMARC are in place can spend weeks digging itself out of spam folders, and no amount of configuration fixes a reputation problem after the fact.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-mailplus-licensing-works-5-free-accounts-then-packs-of-5-or-20\">How MailPlus Licensing Works: 5 Free Accounts, Then Packs of 5 or 20<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every installation includes <strong>five email accounts at no cost<\/strong>, permanently. You count from there. Additional capacity comes in two pack sizes &mdash; five accounts or twenty &mdash; and both are perpetual: bought once, never renewed, with free software upgrades for the life of the product and no expiry date to put in a calendar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Three details matter in practice and surprise people who assume subscription logic. Licences count <em>active<\/em> accounts, not people, so deactivating a leaver frees their licence for the next hire. Aliases on an existing account are free. Every licence in a pack activates when you register the key, rather than one at a time. And licences are not welded to the hardware &mdash; when you replace the NAS, the licences move with you.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A high-availability pair is the pleasant exception to the arithmetic: an HA cluster comes with <strong>ten<\/strong> free accounts rather than five, because both members contribute their allowance. If you were already planning to buy a second NAS for resilience, that quietly halves the licence count you need for a small team.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There is one more free allowance almost nobody counts. Any NAS that supports Virtual Machine Manager includes one Virtual DSM licence, and that guest is a <em>complete<\/em> DSM installation &mdash; so it runs its own MailPlus Server with its own five free accounts. One NAS with one Virtual DSM guest therefore starts at ten mailboxes across the two instances, before a single licence is bought.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The 5-User pack (MLP5)<\/strong> adds five active accounts: <a href=\"https:\/\/synopower.club\/pt\/synology-mailplus-license-pack-5-users\/\">Licen\u00e7a Synology MailPlus para 5 usu\u00e1rios<\/a>.<\/li>\n\n\n<li><strong>The 20-User pack<\/strong> adds twenty, at a lower price per mailbox: <a href=\"https:\/\/synopower.club\/pt\/synology-mailplus-license-pack-20-users\/\">Licen\u00e7a Synology MailPlus para 20 usu\u00e1rios<\/a>.<\/li>\n\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Keys are entered inside the server console itself. The full walkthrough, with screenshots of where the licence field lives, is here: <a href=\"https:\/\/synopower.club\/pt\/docs\/how-to-add-mailplus-license\/\">Guia de recebimento e instala\u00e7\u00e3o da licen\u00e7a Synology MailPlus<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"which-synology-nas-models-can-run-mailplus\">Which Synology NAS Models Can Run MailPlus?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MailPlus runs on Plus-series models and above, across the FS, HD, SA, RS, DS and DVA lines, going back as far as the 16-series. The support list is long, but the number that actually constrains you is not whether the package installs &mdash; it is how many registered and concurrent users the model is rated for.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Modelo<\/th><th>Max users<\/th><th>Max concurrent<\/th><th>Rated throughput<\/th><\/tr><\/thead><tbody><tr><td>FS6400<\/td><td>17,500<\/td><td>3,500<\/td><td>~5,721,000 emails\/day<\/td><\/tr><tr><td>SA6400<\/td><td>14,000<\/td><td>2,800<\/td><td>~5,721,000 emails\/day<\/td><\/tr><tr><td>RS4021xs+<\/td><td>10,000<\/td><td>2,000<\/td><td>~4,312,000 emails\/day<\/td><\/tr><tr><td>DS3622xs+<\/td><td>7,500<\/td><td>1,500<\/td><td>~4,235,000 emails\/day<\/td><\/tr><tr><td>DS1821+ \/ DS1621+<\/td><td>750<\/td><td>150<\/td><td>~1,484,000 emails\/day<\/td><\/tr><tr><td>DS923+ \/ DS723+ \/ DS423+<\/td><td>500<\/td><td>100<\/td><td>~1,224,000 emails\/day<\/td><\/tr><tr><td>DS620slim<\/td><td>250<\/td><td>50<\/td><td>~181,000 emails\/day<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">A representative slice. The full model list and ratings are in the reference doc linked below.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For most small businesses any current Plus model is comfortably oversized on user count, and the real sizing question becomes storage and RAM rather than mailbox limits. The complete list of supported models with per-model user ratings is here: <a href=\"https:\/\/synopower.club\/pt\/docs\/does-my-nas-model-support-mailplus-how-many-users-does-it-support\/\">What Synology NAS models support MailPlus, and how many users?<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-dns-decides-whether-your-mail-actually-arrives\">Why DNS Decides Whether Your Mail Actually Arrives<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A mail server that accepts and stores mail perfectly can still be useless if receiving servers do not trust it. Four DNS-shaped things decide that, and the server can only help with two of them.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SPF<\/strong> lists which IPs may send for your domain. Publish it before your first outbound message, keep it to one record, and avoid the ten-lookup limit by not chaining includes.<\/li>\n\n\n<li><strong>DKIM<\/strong> cryptographically signs each message. The server generates the key pair and gives you the public half to publish; the signing itself is automatic once enabled.<\/li>\n\n\n<li><strong>DMARC<\/strong> tells receivers what to do when SPF and DKIM disagree, and sends you reports. Start at p=none, read the reports for a fortnight, then tighten.<\/li>\n\n\n<li><strong>Reverse DNS (PTR)<\/strong> maps your public IP back to your mail hostname. Only your ISP can set it, and many large receivers reject mail from IPs without a matching PTR.<\/li>\n\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Then there is outbound port 25. A large share of consumer and some business ISPs block it to limit spam, and no setting inside the package can undo that. If yours does, configure the server to relay through a smart host on port 587 &mdash; your ISP&rsquo;s relay or a transactional provider &mdash; which also borrows that host&rsquo;s IP reputation, usually to your benefit on a fresh domain.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DANE support is the piece that surprises people who expect a NAS package to cut corners. It is there, alongside the rest, which means a self-hosted deployment can meet the same authentication expectations as a hosted provider once the DNS is right.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"moving-existing-mail-from-gmail-or-microsoft-365\">Moving Existing Mail From Gmail or Microsoft 365<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MailPlus includes migration tooling for exactly this, and it is the reason most people can switch without declaring email bankruptcy. The server can pull existing mailboxes over IMAP from Google Workspace, Microsoft 365 or any other IMAP source, preserving folder structure and read state.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The sane sequence is to stand the server up and get authentication passing first, migrate one willing user as a pilot and leave them running in parallel for a week, then move the rest in batches with the MX cutover last. Keeping the old provider receiving for a fortnight after the cutover costs one more month of subscription and removes nearly all of the risk.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If your goal is archiving several external accounts into one searchable place on the NAS rather than replacing your provider outright, that is a different and simpler job, covered here: <a href=\"https:\/\/synopower.club\/pt\/docs\/%f0%9f%a4%94-how-can-i-save-my-business-emails-%f0%9f%93%a5-to-a-synology-nas-for-easy-organization-%f0%9f%93%82-and-retrieval\/\">How to save business emails from Gmail, Yahoo and others to a Synology NAS<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-a-40-person-company-uses-mailplus\">How a 40-Person Company Uses MailPlus<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A typical deployment looks like this. Forty staff on a single Plus-series NAS: five accounts free, then two 20-user packs to cover the rest with room to grow. Mailbox data lands on a Btrfs volume with hourly snapshots, so a deleted-folder accident is a five-minute restore rather than a support ticket to a provider.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Aliases handle the addresses that are not people &mdash; sales, support, accounts &mdash; without consuming a licence each, because an alias belongs to an existing account instead of being one. The webmail client covers staff who never install anything, while the rest keep Outlook or Apple Mail over IMAP and never learn that the back end changed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The recurring cost after that is electricity and disks. The licences do not come back for a second bite in year two, which is the entire point: this site&rsquo;s own notification mail runs on MailPlus, on a virtual DSM instance, and has not generated an invoice since the day the keys were registered.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Every licence key this shop delivers is sent from that instance, any hour of the day, anywhere in the world. We also use the AI writing features built into the MailPlus client to work with customers across sixteen languages &mdash; smart drafting, tone adjustment, grammar checking and translation, applied inside the mailbox rather than pasted out to a browser and back.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Budget for that separately, though: the AI is an integration, not an included model. An administrator supplies an API key from an external provider &mdash; OpenAI, Azure OpenAI, Amazon Bedrock, Google Gemini or Baidu AI Cloud &mdash; and that provider meters the usage. The mail server is paid for once; whatever sits behind the AI button is not.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"where-to-find-more-official-resources\">Onde encontrar mais recursos oficiais<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Three videos worth the time before you commit &mdash; two from Synology and one community walkthrough that covers the awkward residential-IP case honestly.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Como configurar seu servidor Synology MailPlus\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/tBLjJWn-WBk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\">Synology&rsquo;s own setup walkthrough for the mail server package.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"How to Configure Synology MailPlus Server to Protect Your Mail Service\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/I_ap-K0Y9jg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\">Configuring the server&rsquo;s security and anti-spam layers.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Synology MailPlus Server Step-By-Step Setup Guide\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/UoPVlKBcND0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\">A step-by-step build, including what changes when you are on a dynamic residential IP.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"limits-to-know-before-you-trust-mailplus-with-business-mail\">Limits to Know Before You Trust MailPlus With Business Mail<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>You inherit deliverability as a permanent job.<\/strong> Blocklists change, DMARC policies at receivers tighten, and IP reputation drifts. A hosted provider absorbs that invisibly; here it becomes somebody&rsquo;s named responsibility. Budget an hour a month for reading DMARC reports, and know who gets the call when a customer says your mail stopped arriving.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>One NAS is one point of failure.<\/strong> A mail server that is down is not like a file share that is down &mdash; senders retry for a while and then bounce. If mail is genuinely business-critical, the high-availability pair is not a luxury, and it comes with the consolation of ten free accounts instead of five.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Your ISP holds two switches you do not.<\/strong> Outbound port 25 and the PTR record are both theirs. Confirm both before you migrate, not after, because discovering a port 25 block mid-cutover means reworking your sending path under time pressure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Storage planning is unforgiving.<\/strong> Mail grows monotonically and users delete nothing. Size the volume for several years, put it on Btrfs so snapshots are cheap, and make sure the mail spool is genuinely inside your backup job rather than assumed to be.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Licences are per active account, and the count is enforced.<\/strong> Plan the headcount you are actually licensing for, including shared addresses that will need to be real accounts. Adding capacity later is easy, but discovering the shortfall during a migration weekend is not.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Buy the keys from a source you can identify.<\/strong> Licence keys register against your NAS and your Synology Account, so a key from a keygen or a grey marketplace is not a discount &mdash; it is a server that fails validation, with no seller to go back to. Licences are also genuinely transferable between NAS units when bought legitimately, which is worth more than any saving: <a href=\"https:\/\/synopower.club\/pt\/docs\/can-synology-licenses-purchased-here-be-transferred-or-migrated\/\">Can Synology licences be transferred or migrated?<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"references\">Refer\u00eancias<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.synology.com\/en-global\/dsm\/feature\/mailplus\" target=\"_blank\" rel=\"noopener\">Synology MailPlus &mdash; official feature overview<\/a><\/li>\n\n\n<li><a href=\"https:\/\/www.synology.com\/en-us\/products\/MailPlus_License\" target=\"_blank\" rel=\"noopener\">MailPlus License Pack &mdash; official product page<\/a><\/li>\n\n\n<li><a href=\"https:\/\/kb.synology.com\/en-global\/DSM\/help\/MailPlus-Server\/mailplus_server_license\" target=\"_blank\" rel=\"noopener\">License &amp; Account &mdash; Synology MailPlus Server Knowledge Center<\/a><\/li>\n\n\n<li><a href=\"https:\/\/kb.synology.com\/en-sg\/DSM\/tutorial\/How_many_free_MailPlus_licenses_do_I_have_in_an_HA_cluster\" target=\"_blank\" rel=\"noopener\">How many free MailPlus licenses do I have in a high-availability cluster?<\/a><\/li>\n\n\n<li><a href=\"https:\/\/kb.synology.com\/en-global\/DSM\/help\/MailPlus-Server\/mailplus_server_ai\" target=\"_blank\" rel=\"noopener\">AI Features &mdash; Synology MailPlus Server Knowledge Center<\/a><\/li>\n\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"frequently-asked-questions\">Perguntas frequentes<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-1\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Is MailPlus free?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>The server and webmail client packages are both free to install from Package Center, and every installation includes five email accounts at no cost, permanently. You only pay when you need a sixth active mailbox, and then you buy a perpetual licence pack rather than a subscription.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-2\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">How many email accounts are included by default?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Five. A high-availability cluster of two NAS units includes ten, because each member contributes its own free allowance. Beyond that, licence packs add five or twenty active accounts each.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-3\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Do MailPlus licences expire or need renewing?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>No. They are perpetual and one-time, with free software upgrades for the life of the product. Once activated they do not expire, which is the main structural difference from Google Workspace and Microsoft 365.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-4\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Can I move a licence to a new NAS?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Yes. Licences are not permanently welded to one machine, so when you replace or upgrade the NAS the licences move with you. That portability is also why keys from unidentifiable sellers are a bad trade &mdash; there is nobody to help when validation fails.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-5\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What happens to a licence when an employee leaves?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Licences count active accounts rather than named people. Deactivate the leaver&rsquo;s account and the licence is freed for the next hire, so you are not buying capacity again for the same headcount.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-6\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Which Synology NAS models can run it?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Plus-series and above across the FS, HD, SA, RS, DS and DVA lines, going back to the 16-series. The practical constraint is the per-model user rating rather than compatibility: a DS620slim is rated for about 250 users, a DS923+ for 500, and an FS6400 for 17,500.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-7\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Do I need a static IP address to run MailPlus?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Not strictly, but it makes everything easier. Receiving servers weigh reverse DNS and IP reputation heavily, and residential dynamic ranges are often blocklisted by default. If you are on a dynamic IP, plan to relay outbound mail through a smart host on port 587.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-8\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What if my ISP blocks outbound port 25?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Many do, and no setting in the package overrides it. Configure the server to send through a smart host on port 587 instead &mdash; your ISP&rsquo;s relay or a transactional email provider. Incoming mail on port 25 is unaffected, so only the sending path changes.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Still deciding how many accounts you need, or which pack works out cheaper for your headcount? The licensing questions we get asked most are collected here: <a href=\"https:\/\/synopower.club\/pt\/faq\/\">SynoPower Club licensing FAQ<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>O MailPlus transforma um NAS Synology em um servidor de e-mail completo em hardware que voc\u00ea j\u00e1 possui: cinco contas gratuitas, licen\u00e7as perp\u00e9tuas e sem cobran\u00e7a mensal por usu\u00e1rio.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[185],"tags":[186],"class_list":["post-21192","post","type-post","status-publish","format-standard","hentry","category-mailplus","tag-email-server"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"_links":{"self":[{"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/posts\/21192","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/comments?post=21192"}],"version-history":[{"count":1,"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/posts\/21192\/revisions"}],"predecessor-version":[{"id":21193,"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/posts\/21192\/revisions\/21193"}],"wp:attachment":[{"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/media?parent=21192"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/categories?post=21192"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/synopower.club\/pt\/wp-json\/wp\/v2\/tags?post=21192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}