Rejecting non-existant users

[Chris Green]

Hi Ken,

The answer is here:

http://wiki.mailscanner.info/doku.php?id=documentation:configuration:mta:postfix:how_to:reject_non_existent_users

I have been using this and it works a treat, reduced my quarantine area by 
95% instantly. Just take the default answers when installing Net::LDAP and 
you should be fine. I'm now trying to do the same in Exim - I'll post up 
that solution if it's not there already.

>
>Hello All,
>
>2 years ago I setup a spam filter gateway that delivers to a 2nd  mail
>server running Windows 2003.
>I set it up using a paper :
>CREATING A SPAMFILTER RELAY SERVER By Scott L. Henderson
>Later I added Mailscanner and everything works fine except I get a large
>number of spam messages to random email addresses in 4 virtual domains
>
>I have a Postfix book, but I cannot figure out if I can have a static list
>of valid email addresses that postfix checks before running all the spam /
>virus checks and trys to forward to the 2nd sever and then fails because 
>the
>address in no good.  I would like to just drop the invalid email addresses
>at the postfix level.  My postfix queue is at 12,000 messages most of which
>are for bogus addresses.
>
>I have less than 150 email accounts
>Please excuse my ignorance I have very limited linux know-how
>
>Thanks for your time
>
>Ken


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