[Dovecot] OT: DNS-Problem with Mailnglist-Server

[Henrik Larsson]

> which leads to postfix complaining:
>
> May 30 13:28:39 mail postfix/smtpd[25014]: NOQUEUE: reject_warning: 
> RCPT
> from unknown[193.210.130.67]: 450 4.7.1 Client host rejected: cannot
> find your reverse hostname, [193.210.130.67];
> from=<dovecot-bounces at dovecot.org> to=<hanns at hannsmattes.de> 
> proto=ESMTP
> helo=<dovecot.org>

If your are checking for reverse hostname and won't accept e-mails if 
this is not present you will reject a lot of legitimate mail.