strange resolver behavour
tevans.uk at googlemail.com
Tue Oct 12 10:03:21 UTC 2010
On Tue, Oct 12, 2010 at 10:05 AM, Ian Smith <smithi at nimnet.asn.au> wrote:
> On Mon, 11 Oct 2010, Eugene Grosbein wrote:
> > Hi!
> > FreeBSD 8.1-STABLE:
> > # host koin-nkz.com.
> > koin-nkz.com has address 22.214.171.124
> > Host koin-nkz.com not found: 3(NXDOMAIN)
> > This domain does not have MX records but NXDOMAIN seems to wrong return
> > code to me. Think about MTA that does look-up for MX first,
> > obtains NXDOMAIN and rejects mail.
> If a domain has no MX server, how's an MTA supposed to do mail with it?
The same way as has been done since they invented the MX record type -
if no MX record exists, fallback to an A record. See RFC 5321, section
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