Blocked by msn.com MX, contact for MSN.COM postmaster ?

Mark E. Mallett mem at mv.mv.com
Wed Jan 29 22:43:51 UTC 2003


On Tue, Jan 28, 2003 at 11:49:16AM +0000, Miquel van Smoorenburg wrote:
> 
> I found out that our outgoing SMTP servers have been blocked by
> the msn.com MXes. In a nasty way, too -- no SMTP error, the TCP
> connection is simply closed by them immidiately after establishing it.
> We're not listed on any RBL/DNSBL and have an active abuse desk.
> 
> I mailed postmaster at msn.com, msnhst at msn.com, noc at microsoft.com,
> but didn't get a reply from any of them. Does anyone here know
> who to talk to ?

I'd be interested in knowing what you find out.  We observed the same
thing a while ago from one of our mail servers-- but just one.
Connection drops immediately, no clue given as to why.  However, from
another mail server just a few IP numbers away (in the same /24), the
connection goes through just fine.  The workaround was obviously to
configure the first mail server to relay mail for msn.com via the
second one, and to try to get Microsoft to tell us what was up.  No
luck on that last front though.

-mm-



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