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Re: MX records pointing to 127.0.0.1 (was Re: Correction: Recipient verification functionality request)

From: Ralf Hildebrandt (Ralf.Hildebrandtcharite.de)
Date: Tue Jul 01 2003 - 23:57:19 CDT

* wolfgang <spamfilteredgmx.net>:

> i ran into a problem with permit_mx_backup
>
> the MX record for a foreign recipient domain was set to 127.0.0.1 on their DNS
> server, so postfix was accepting and relaying mail to them.
> would reject_unauth_destination preceding permit_mx_backup prevent such
> "abuse"?

backup_mx_networks can help

> since we do currently not really need the mx_backup functionality, i disabled
> it.

Usually, I would not activate anything I don't need.

--
Ralf Hildebrandt Ralf.Hildebrandtcharite.de
my current spamtrap spamtrapcharite.de
http://www.arschkrebs.de/postfix/ Tel. +49 (0)30-450 570-155
Three things are certain:
Death, taxes and lost data.
Guess which has occurred.