On Mon, Nov 23, 2009 at 03:51:33PM +0100, Robert Schetterer wrote:
> > the server got a list of domains (those domains mail servers use this
> > server as relayhost)to relay out and does only smtp out; what could be
> > wrong in the above config; appreciate ur assistance upon this
>
> thats the reason, guess your relay clients get lots of i.e spam/virus
> mail,perhaps they bounce after allready got the mail for nonexistent
> domains/mailaccounts etc ( do they have catch alls, buggy virus
Indeed, if you relay backscatter, you can expect to be listed as a
backscatterer! That's pretty simple. Don't do it. Get the clients to
fix their problems. In the meantime a check_sender_access lookup
will stop the abuse:
<> HOLD
and you can check mailq(1) periodically; release any that look like
legitimate bounces, and deal with the others as may be appropriate.
"man postsuper" for information.
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