Re: why our server got listed?

Oleg Bulyzhin wrote on Thu, 4 May 2006 20:46:39 +0000 (UTC):

> As i mentioned above i'm talking about DSNs (which i incorrectly named 
> bounce). Supressing DSNs is standard violation. _There are_ situations 
> when you should accept mail and deliver it later.

Nobody wants you to suppress the DSN. What we (tinw) *do* want you to do 
is rig your secondary MX such that the situation in which a DSN should 
be sent no longer arises.

LDAP goes a long way towards solving your problems. By using LDAP, your 
secondary MX can have access to the user list on the primary MX, and 
therefore REJECT (rather than bounce) messages sent to non-existent 
users. No more backscatter.

Admittedly, accounts over quota are another problem. However, I'm sure 
that most of your problems are due to non-existent users.