Andrey Repin:
> Greetings, All!
>
> > I think I just broke my mail system. I'd like a quick help if possible.
> > I have a remote server that accepts the mail for domain right now.
> > The mail is retrieved from it by fetchmail and pushed to the local postfix
> > instance to be delivered to the user mailboxes using
>
> > mda "/usr/sbin/sendmail -iG -N never -f %F -- %T"
>
> > The problem is, only virtual recipients are delivered correctly.
> > An attempt to deliver mail for real users end in message being trashed with
> > "delivery loop detected".
> > The log says "bounced", but it is nowhere to be found. Not on postmaster,
> > neither on the sender's address.
>
> Ok, I've managed to capture a bounce.
> Here's headers of a message that was received (and bounced) by postfix.
> Yes, the final destination is [email protected], and the user actually
> exists.
Rule number one: email routing MUST NOT depend on the message
header content and it MUST NOT depend on the message body content.
Wietse
