From: Crystone AB / Daniel Sorlov (no email)
Date: Wed May 01 2002 - 14:33:14 EDT
> Currently I have my server configured to require that any sending host
> has a valid reverse DNS lookup, which has cut down the amount of UCE we
> receive a lot. However we have one client who has no reverse lookup, and
> insist they have no intention of fixing it.
Officialy u are allowed to call them idiots.
ptr is a fine invention and should be used.
they have problems with many services if not ptr-ing. thier loss.
>
> How have other people found this checking works, should I abandon it and
> go back to header checks, or carry on trying to get them to fix it. Or
> alternatively could I accept mail from them with no reverse as an
> exception; perhaps by putting their domain in 'sender'?
you could make a entry in /etc/hosts
xxx.xxx.xxx.xxx their.sucky.host.com
Sincearly
Daniel Sorlov
Network Administrator
Crystone AB, +46 11103000
www.crystone.se, www.swede.com
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