SPAM from own customers
suresh at outblaze.com
Tue Dec 2 19:23:40 UTC 2003
Michel Renfer writes on 12/2/2003 12:50 PM:
> How will you deal with the problem, that one user can flood your
> SMTP Server with tousends of emails within 10-20 minutes?
Rate limit (+ script to auto terminate user) and smtp auth on outbounds
Separate inbound and outbound smtp relay. Don't let your inbound MX
relay for your dialup pool (some trojans take the rDNS name / hostname
of the infected box and do nslookup -q=mx domainname)
Ask AOL for an scomp at aol.net feed - a lot of these trojan spams seem to
target AOL users.
srs (postmaster|suresh)@outblaze.com // gpg : EDEDEFB9
manager, outblaze.com security and antispam operations
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