On Fri, 15 Oct 2004, Mark wrote:
If the domain does not exist (RCODE 3), check_host() exits
immediately with the result "Fail" and a reason of
"Domain Does Not Exist"
That looks like a violation of RFC 2821 (Section 3.6 Domain), which states
that domain names should be used that can be resolved to either MX RRs or A
RRs. And refers to section 5 ("Address Resolution and Mail Handling"):
When I read "Domain Does Not Exist", I understood "Domain has no
MX or A records or even an SPF record". Why would "Domain does not
exist" mean only that there are no A records? However, it looks like
"Domain does not exist" needs to be specifically defined since we didn't
receive the same meaning.
BTW, as a matter of local policy, if there are no A or MX records, there is no
way to send a bounce - which is a good reason to reject the mail as far as I'm
concerned.
--
Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.