Seems to me that our mail server is wasting alot of CPU and quarantine disk space scanning email messages for unknown users. Is there a patch that would bounce messages to unknown recipients before the mail reached qmail-scanner? We have one domain that suffered a dictionary attack while they had a global catch-all enabled and now gets 50,000 emails a day to unvalid users.
Not sure if any of these are compatible with vPopMail:
http://www.qmail.org/top.html
# Ward Vandewege wrote a patch to implement badrcptto, in the same vein as badmailfrom.
http://patch.be/qmail/
# John Levine wrote a badrcptto patch which uses CDB and logging. http://www.iecc.com/bad-rcpt-noisy-patch.txt --- Anthony Baratta President Keyboard Jockeys
"Conformity is the refuge of the unimaginative."
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