Cannot send email to hotmail.com !?!?

From: J (J_at_discussions.microsoft.com)
Date: 10/20/04 

Date: Wed, 20 Oct 2004 06:45:06 -0700

Hi,

I am running Exchange 2003 on Windows 2003. I have several SMTP queues that
are stuck on retry and are unable to get the mail delivered. The domains
include hotmail.com and bt.com (as well as a few others). Having turned on
SMTP logging I am getting application event log warnings 4006 which either
tells me that delivery to the host 'ip_address' failed due to a semiphore
timeout period expiring or because the remote host dropped the connection.

We have had DNS issues and originally I thought this problem was definately
caused by reverse DNS lookup pointing to our old mail server and not the new
mail server, but the reverse DNS entries are now fine (last 2 days) and still
I am experiencing this problem.

I can telnet into the remote mail servers and send an email through that
way, but mail in the queues just will not go.

Please help. I appreciate any questions, suggestions or comments.

Thanks

J

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