I don't know if any updates caused this but when i send emails to any of my domains on ISPconfig 3 I get an Undelivered Mail to Sender
<firstname.lastname@example.org>: user unknown. Command output: ERR: authdaemon:
s_connect() failed: Permission denied Invalid user specified.
Reporting-MTA: dns; server.mydomain.com
X-Postfix-Sender: rfc822; email@example.com
Arrival-Date: Sun, 14 Mar 2010 23:37:51 +0200 (EET)
I know for sure that the user exists and I can send emails with it but even if I try replying then the email is not delivered.
In mail.log there are no errors besides the bounce.
Any ideas how to resolve this?