Racker Hacker

Let’s say you have a user who can’t receive e-mail. Each time they send a message to the server, this pops up in the mail logs:

postfix/smtpd[23897]: NOQUEUE: reject: RCPT from remotemailserver.com[10.0.0.2]: 554 <user@domain.com>: Relay access denied; from=<user@otherdomain.com> to=<user@domain.com> proto=ESMTP helo=<remotemailserver.com>

This is happening because Postfix is receiving e-mail for a domain for which it doesn’t expect to handle mail. Add the domains to the mydestination parameter in /etc/postfix/main.cf:

mydestination = domain.com, domain2.com, domain3.com

If you have a lot of domains to add, create a mydomains hash file and change the mydestination parameter:

mydestination = hash:/etc/postfix/mydomains

Create /etc/postfix/mydomains:

localhost OK
localmailserver.com OK
domain.com OK

Then run:

# postmap /etc/postfix/mydomains

This will create the hash file (mydomains.db) within /etc/postfix. If you’ve just added the directive to the main.cf, run postfix reload. However, if the directive was already there, but you just adjusted the mydomains and ran postmap, then there is nothing left to do.

This entry was posted on Thursday, August 30th, 2007 at 7:06 pm and is filed under Mail.You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.