The people you have spoken to are crack smoking maniacs, not an ISP support team.
4xx is a temporary error. This is an invitation to try again later. This is what you
have.
5.xx would be a fatal error; give up sending email bub it ain't going to happen. You'd
see this if they'd deleted the mail accounts, blocked you from sending, whatever.
To the best of my knowledge the only time that exchange or any other mail system
"should" look for the next MX record is if it fails to connect to the first one. Not
if it connects just fine and then gets told to try again later or sod off.
-----Original Message-----
From: Durkee, Peter [mailto:[EMAIL PROTECTED]
Sent: Tue 09/09/2003 00:28
To: Exchange Discussions
Cc:
Subject: Delivery to Alternate MX Records
Hi All,
I'm a bit puzzled by something and I'm hoping that someone can help out.
There's a particular domain, seanet.com, that we can't send messages to at the moment.
Any message sent to this domain hangs in the IMC queue with the error, 452 4.3.0
Cannot write message to disk. According to this ISP's support group they've recently
reconfigured their main mail server so it can no longer receive messages from the
outside world, and I assume that the error we're seeing is a result of this
reconfiguration. They further claim that our server should try to deliver messages to
their second or third mail server, something it definitely isn't doing.
So here are my questions. Should an Exchange server (5.5, by the way) try the
next MX record after getting a 452 from the primary server, and are there any settings
in Exchange that affect this behavior? As an additional philosophical question, does
it strike anyone else as strange that they should deliberately put an essentially
malfunctioning server at the address of their first MX record in the name of spam
fighting and security?
-Peter
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