Sahil Tandon <[EMAIL PROTECTED]> wrote:
> Jos Chrispijn <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]>
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