Home / server / Questions / 770878
In Process
the_nuts
Asked: 2016-04-17 11:17:31 +0800 CST

Postfix, setup SMTP for hosted websites

  • 772

I have a VPS which hosts different domains, and I'm trying to setup SMTP with postfix, so the users can send emails via SMTP from addresses like:

[email protected]
[email protected]
[email protected]

I managed to configure tsl, sasl etc. but I can't find how to configure the smtp accounts... All the guides I can find use a UNIX user to login, which is not what I'm looking for...

To receive mails, I'm currently using the virtual_alias_maps to forward incoming mails to the respective owner mailbox.

email postfix ubuntu-14.04

2 Answers

  1. Use canonical to rewrite sender adresses as for example:

    1. Within /etc/postfix/main.cf:

      canonical_maps = hash:/etc/postfix/canonical

    2. Within /etc/postfix/canonical:

      user1   [email protected]
user2   [email protected]

    3. Then run:

      postmap canonical
postfix check
postfix reload
    • 1

  2. You have to use virtual mailbox. This is done normally with a database. In database are stored virtual accounts with directory specified where e-mail should be stored. Then IMAP/POP3 server (Dovecot) can provide access to e-mails stored on server.

    For more information try searching for: "dovecot postfix virtual mailbox" For example read this: https://www.digitalocean.com/community/tutorials/how-to-configure-a-mail-server-using-postfix-dovecot-mysql-and-spamassassin

    • 1