Hey All,

Have a qmailserver with qmail-scanner currently being spammed by
several thousand emails a day on a 512/128 ADSL link. The link is
being saturated, which was fixed by lowering concurrencyincoming to
something ridiculously low.

My problem now is the load is something phenomenal, and I would like
to reduce the load on the server by not scanning mail destined for
users who do not exist.

The current spam attack is using random usernames and numbers,
prepended to the domain.

So can I firstly:
Drop email destined for a non-user before being scanned ? (drop at
smtp negotiate level)
or secondly: 
Get qmail-scanner to not scan any mail destined for a non-user ?
(check within perl script ?)


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