What are the very best mail servers for Linux? | Shellrent Weblog

Earlier than an e-mail can attain its vacation spot, i.e. your gmail inbox, it should first undergo a sequence of checkpoints. These are known as mail servers and this system that permits you to ship or obtain e-mail is called an e-mail shopper.
To discover a number of mail servers, it’s important to know the way they impart and the assorted protocols arrange to make sure that every message is authenticated.

Within the article, you will see that some important particulars about Linux mail servers that can assist you discover the suitable one for your small business.

What are mail servers?

The mail servers handle the receipt of incoming mail, the sending of outgoing mail and entry to your mailbox from webmail, distributing the assorted emails accurately.

On the whole, they embody quite a lot of interconnected servers that ship the e-mail to the proper recipient.

What are mail shoppers?

Mail shoppers are clearly completely different from mail servers: they assist emails to maneuver from one server to a different till it reaches its supposed recipient.

In contrast to servers, e-mail shoppers don’t handle storage amenities and should have a shared community connection.

For instance, Outlook and Thunderbird are two of the most well-liked e-mail shoppers – they provide an interface by which you’ll be able to preserve your messages organized and simple to search out with categorization. You too can add or view attachments utilizing e-mail shoppers.

How does sending an e-mail work?

What path does an e-mail take from composition to supply? The operation is just not accomplished in a single step however goes by a sequence of servers to reach on the vacation spot mailbox. What are the steps?

  • Step 1: the e-mail is written with an e-mail shopper (e.g. Outlook). After urgent the ship key, the mail shopper routinely connects to your area server. The latter interacts with the shopper to gather all the main points and components of the message.
  • Step 2: After accumulating the info, the server follows a regular Easy Mail Switch Protocol (SMPT) to provoke the switch. The server will seek for the recipient’s area identify, discovering the vacation spot server (a DNS server is used to get the recipient’s area identify and connects to the vacation spot mail server, often called a Mail Exchanger or MX).
  • Step 3: Subsequent, the mail switch agent finds and delivers the message to its ultimate vacation spot which in flip accepts it through two predominant protocols: POP or IMAP.

Which Linux mail servers to decide on?


Courier mail servers present particular person protocols corresponding to IMAP or ESMTP and are suitable with main platforms corresponding to Linux and Mac OS X.
The administration panel is intuitive and incorporates a number of web-based configuration and administration instruments.
The built-in filtering mechanism fights spam emails.


Dovecot is the mail server we’re at the moment utilizing. We selected it for its stability, updates, and all the time full performance, far more consistent with our operational wants than Courier, which we used beforehand.
Dovecot, suitable with the primary platforms, is among the many servers with the very best efficiency and suppleness: it gives a excessive customary of safety and ease of migration.
Like Courier, it options an intuitive and complete administration panel.

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