Educause Security Discussion mailing list archives

Re: smtp redirection


From: Valdis Kletnieks <Valdis.Kletnieks () VT EDU>
Date: Tue, 10 May 2005 16:54:26 -0400

On Tue, 10 May 2005 15:57:17 EDT, Valdis Kletnieks said:
It's been *many* moons since anything except ratware failed to do MX handling
in some reasonable manner.  I mean, come *ON*, MX records were defined in RFC973.

On Tue, 10 May 2005 15:57:02 EDT, Geoff said:
You will experience a few external sites that will have trouble sending
to you. These will all be badly configured MS Exchange servers that
can't cope with MX records. They'll want to be able to connect to the
destination IP SMTP port directly. When you speak with their mail admin,
you'll find they have no concept of what an MX record is. RTFM is the
correct advice to them.

I stand by my categorization of "nothing except ratware".  If MS Exchange
*ever* shipped with MX turned off by default, *or* if it made it trivial
for an unclued admin to disable it, it's broken ratware even if it *is* in
widespread use.

It's really gotten to the point where we need to say "Your clue must be
this tall to ride the Internet".  I'd almost recommend *against* suggesting
that they RTFM to figure out how to fix *this* problem, because once they
do, they will be sending you all *sorts* of broken and misconfigured stuff.
All that getting their system working will buy you is a a continuing
maintenance headache.

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