Logu wrote:
We are using qmail + ldap now. I have put assp in front of qmail to block
these mails. Any better solution will be greatly appreciated.

qmail will accept all the emails - even to nonexistent addresses - and then generate a bounce later


so you are stuck with a lot of bounces and double bounces

try this patch - http://horde.net/~jwm/software/qmail/verifyrcptto-2.2.5-20030501.patch

or better still get rid of qmail and move to exim / postfix etc that has more sensible behavior (reject unknown users at rcpt to by default)


Thanks suresh.
For the time being we are not going for qmail recompilation. We are about to switch to some other mailservers (sendmail + mimedefang + spamassasin + clamav). In the meantime we are placing assp (anti spam smtp proxy -http://assp.sf.net ) infront of qmail. And it is doing a good job till now. Does anyone know the pros and cons of it.


Thanks
-Logu





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