On Mon, Nov 05, 2007 at 01:48:24PM -0500, Chris Knadle wrote: > On Monday 05 November 2007, Paul Chauvet wrote: > > In Postfix at least, you can do this with reject_non_fqdn_hostname in > > the smtpd_helo_restrictions. In addition we reject a ton of spam from > > people who try to HELO/EHLO as our hostname or IP address. > > Yes that also helps quite a bit. It's also not RFC 2821 compliant to send > a raw IP address for a HELO/EHLO greeting, so I reject those as well. [An IP > address encapsulated in brackets is okay.] Also good to reject a HELO/EHLO > claiming to be from your own IP block, or which are in RFC 1918 private IP > address ranges.
Do you do this with pcre filters? -m -- Mike Kershaw/Dragorn <[EMAIL PROTECTED]> GPG Fingerprint: 3546 89DF 3C9D ED80 3381 A661 D7B2 8822 738B BDB1 Know the rules other people live by. Know them well. Know them in the same way terrorists know about cars: so that you know where to put the bomb.
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