Dealing with persistant mailers

Brad White brad at LTINETWORKS.COM
Tue May 13 00:44:22 IST 2003

If you are running sendmail you could always block them with the access
database.  You will need to know what ip or domain the connecting email
server is on.  That way they get blocked at the very start of the smtp
connection, before it gets handed off to MailScanner. 

-----Original Message-----
From: Hendrik den Hartog [mailto:hden at KCBBS.GEN.NZ] 
Sent: Monday, May 12, 2003 4:41 PM
Subject: Dealing with persistant mailers

We have a group of sites that we get 'problem' email from.

Being a school, we have students who leave after 'x'
number of years, email to these students gets bounced
with 'unknown user' messages, but some sites, e.g. some
maillists, seem to ignore these.
Also, some sites seem to reject return mail, causing
unwanted network traffic with the to-ing and fro-ing.

Some of these sites are a real nuisance!

What is the best [i.e. most economical on resources] way
to block these sites, and or any other statagies to
combat these are appreciated


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