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Brad Fitzpatrick

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DHCP users [Jul. 17th, 2004|10:44 pm]
Brad Fitzpatrick
I followed tydel's advice and setup danga.com's postfix to not accept mail from DHCP addresses. If you try to send mail to me or anybody @danga.com now from your home DHCP server, you'll get:

554 DHCP Pool clients should use their ISP's mail server

Tailing my mail.log, it sure is rejecting a shitload of messages!

But really, you shouldn't be running an MTA on your DHCP address anyway. I know this will block some geeks who just want to run their own mail server, but they should be smarthosting it elsewhere.

Next step: ClamAV? That's the one you recommended, right scsi?
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Comments:
[User Picture]From: matthew
2004-07-18 08:42 am (UTC)
I use this service to obtain the same effect:

http://www.us.sorbs.net/

They list DHCP pools, zombied machines and known spammers. Cut my spam load in half when I enabled this one. :)
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