nanog mailing list archives
Re: SPAM from own customers
From: Suresh Ramasubramanian <suresh () outblaze com>
Date: Tue, 02 Dec 2003 14:23:40 -0500
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?
Virus filtering Rate limit (+ script to auto terminate user) and smtp auth on outboundsSeparate 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 () aol net feed - a lot of these trojan spams seem to target AOL users.
etc -- srs (postmaster|suresh)@outblaze.com // gpg : EDEDEFB9 manager, outblaze.com security and antispam operations
Current thread:
- SPAM from own customers Michel Renfer (Dec 02)
- Re: SPAM from own customers Suresh Ramasubramanian (Dec 02)
- Re: SPAM from own customers Brian Bruns (Dec 02)
- Re[2]: SPAM from own customers Richard Welty (Dec 02)
- Re: SPAM from own customers Adam Debus (Dec 02)
- Re: SPAM from own customers Brian Bruns (Dec 02)
- Re: SPAM from own customers Chris Lewis (Dec 02)
- Re: SPAM from own customers Suresh Ramasubramanian (Dec 02)