RE: Advanced tricks I use to get rid of spam using MX 4xx [X200611277118]

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-----Original Message-----
From: prj@po.cwru.edu [mailto:prj@po.cwru.edu]
Sent: Monday, November 27, 2006 7:13 PM
To: Harald Hanche-Olsen
Cc: qmail@list.cr.yp.to
Subject: Re: Advanced tricks I use to get rid of spam using MX 4xx

Harald Hanche-Olsen <hanche@math.ntnu.no> wrote:
> Are there Unix variants that will let you decide in userland what to
> do about an incoming SYN?

It could be done by manipulating firewall rules, although that's
hardly convenient.


paul