Here is the situation: I setup Ispconfig on Etch for my friend (four domains), and
suddenly he was unable to send mail via smtp. I did reconfigure postfix as described here http://www.howtoforge.com/perfect_setup_debian_etch_p5
. Smtp problems was fixed, but now system wont accept any mail, returning code:
<firstname.lastname@example.org>: host mail.mydomain.com[126.96.36.199] said: 554 5.7.1
<email@example.com>: Relay access denied (in reply to RCPT TO command)
Any idea how to solve the problem?