Mailserver requirements

Mon Apr 5 23:48:59 UTC 2004

* rwelty at averillpark.net (Richard Welty) [Mon 05 Apr 2004, 23:50 CEST]:
> On Mon, 05 Apr 2004 23:32:08 +0200 Arnold Nipper <arnold at nipper.de> wrote:
>> 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.
> 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: 