woodsweird.com (Greg A. Woods) writes:

> [ On Thursday, November 1, 2001 at 00:30:25 (+0100), Simon J Mudd wrote: ]
> > Subject: Re: another interesting spam trick...
> >
> > I've been blocked by you before and imagine I would be in the same
> > situation now, though I could configure the smtp client appropriately now
> > if necessary. Do you check that one of the ips is valid when looking up a
> > hostname with multiple ip addresses?
>
> Yes. The connection is permitted if any one of the A RRs returned for
> the hostname given as the greeting parameter matches the source address
> of the TCP virtual circuit.
>
> > (I can't fix the reverse DNS as the
> > addresses are not owned by me.)
>
> I also do TCP Wrappers style "paranoid" checks, iff there are any PTRs
> found, so iff you have PTRs then you must keep all your forward and
> reverse DNS fully 100% consistent too; but that's no different than
> trying to connect to my fingerd or ftpd....
>
> Having no reverse DNS is (slightly) better than having incorrect reverse DNS.

Yes I understand. Thanks for the clarification.

Simon

-- 
Simon J Mudd, Madrid SPAIN.   email: sjmuddpobox.com
Tel: +34-91-408 4878,   Mobile: +34-605-085 219
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