Some errors in /var/log/maillog

[Jack Berger]

Same here. We were getting a ton of spam on our server. Implemented
these types of rules and it virtually dropped to zero. Problem was
many of our member companies have misconfigured dns and mail servers
and we were bouncing vaidi mail. Pleas w/them to fix THEIR stuff, even
help them do it, only resulted in their CEO calling ours to demand
that we fix or stuff, and naturally you can imagine who caved, and who
took the heat.

Of course after we relaxed the rules, then came the questions of "Why
are we getting all of this spam again. I thought you fixed that."  ;0

-jhb-

=============================================
From:  Keith Morse <kgmorse at mpcu.com>

On Fri, 5 Sep 2003, Bill Campbell wrote:

> On Fri, Sep 05, 2003, Swapana Ghosh wrote:
> >Thanks you very much.
> >
> >-Swapna
> >
> >> 
> >> Reverse lookup failed?...
> 
> BTW:  This is an excellent criteria for spam blocking...

Excellent criteria, If you could get a response from the domain's
admin 
after mailing them to let them know their DNS is broken.  And your 
customers didn't get business critical email from those broken
domains.  
There are a lot of broken but valid dns domains out there.

Been there, done that, got the teeth marks on my butt.