Postfix communicating with IPFW

[Sahil Tandon]

Sahil Tandon <sahil at tandon.net> wrote:

> Jos Chrispijn <jos at webrz.net> wrote:
> 
> > I recently got attacked with some dsl subscribers of this (imaginary) 
> > some.net domain.
> >
> > These subscribers present themselves as [ip address.dynamic.some.net].
> > Postfix SMTP server: errors from 66-66-66-166.dynamic.some.net 
> > [66.66.66.166]

One more thing: I use the following PCRE to block dynamic-looking IPs at
SMTP and it really isn't resource intensive.

/\d+([-\.]\d+){3}/	REJECT  Generic hostnames prohibited.

-- 
Sahil Tandon <sahil at tandon.net>