DNS woes (was Re: 50Hz vs 60Hz fixed drive speed ?)

From: Jay West <jwest_at_classiccmp.org>
Date: Wed Feb 18 06:29:01 2004

Sellam wrote....
> I think the reason it works when you receive messages from CC and not
> directly from me is because my siconic.com domain does not rDNS resolve
> properly (stupid upstream ISP

As of late I have noticed that more and more major mail servers will not
process mail from any server who's forward and reverse dns do not match
exactly. That's not a big deal, but the way some (AOL) are doing it, does
violate RFC's. Specifically, even if the forward and reverses DO match, but
the reverse lookup provides aliases as well, they will toss it. However,
this breaks an RFC-specified way of handling delegation of subnets on uneven
boundaries. *sigh*

Jay West

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Received on Wed Feb 18 2004 - 06:29:01 GMT

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