* rwelty@averillpark.net (Richard Welty) [Mon 05 Apr 2004, 23:50 CEST]:
of course this server does have a reverse mapping. But this reverse mapped doamin does not have an MX record. yes, and that's what's wacky. there is no requirement in the RFCs that i'm aware of that mail senders have MX records pointing back at them.
On Mon, 05 Apr 2004 23:32:08 +0200 Arnold Nipper <arnold@nipper.de> wrote: there's not even a requirement for MX records for a domain, the SMTP RFCs clearly indicate that in the absense of an MX record, an A record will suffice.
People do all sorts of wacky things in the name of policy. The .za registrar, for example, required nameservers for domains in it to respond authoritatively and positively to questions about PTR records for its (the nameserver's) own IP address... -- Niels. -- Today's subliminal thought is: