Re: [ot][hlds_linux] Content hosting provided by...

[Matt Judge]

Mad Scientist wrote:

Actually, that's not true. In RFC 2821: "Simple Mail Transfer
Protocol", Section 5, it reads:
  "The lookup first attempts to locate an MX
  record associated with the name.  If a CNAME record is found instead,
  the resulting name is processed as if it were the initial name.  If
  no MX records are found, but an A RR is found, the A RR is treated as
  if it was associated with an implicit MX RR, with a preference of 0,
  pointing to that host.  If one or more MX RRs are found for a given
  name, SMTP systems MUST NOT utilize any A RRs associated with that
  name unless they are located using the MX RRs; the "implicit MX" rule
  above applies only if there are no MX records present.  If MX records
  are present, but none of them are usable, this situation MUST be
  reported as an error."
-Mad




I never knew that.

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RE: [ot][hlds_linux] Content hosting provided by...

[Drew Broadley]

It will try the A Record for the domain, if there is no MX record, THEN
fail if there is no SMTP Server on that IP.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mad
Scientist
Sent: Friday, October 24, 2003 2:49 PM
To: [EMAIL PROTECTED]
Subject: RE: [ot][hlds_linux] Content hosting provided by...



According to the great words of Drew Broadley:
> BTW: You don’t NEED an mx record on a domain unless mail for that
> domain goes to another IP.

Another IP compared to what? It needs an MX record for mail to be
delivered. If there is no MX, remote mail servers will drop the mail.

-Mad

--
"A proof is a proof. What kind of a proof? It's a proof. A proof is a
proof. And when you have a good proof, it's because it's proven."

– Prime Minister Jean Chrétien



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