Hi!
I am having TCP/IP connectivity problems with seemingly random hosts on the
internet. However, the same hosts are very reliable in not talking to our
system. Unfortunately, some of these hosts belong to clients of ours and we
can't send them e-mail!
Our system is Windows NT 4.0 SP6 with Exchange Server.
The top level protocol is SMTP and the connection is timing out sending the
body of the mail message. For the hosts that fail to accept the
transmission, the pattern seems to be the same:
The preliminaries of the SMTP protocol level always succeeds.
Our system sends multiple TCP packets containing the mail message with 1460
data bytes in each packet.
The remote host NAKs the first packet, so our system retries 5 times
The remote host either does not respond or sends a FINISH packet
I have netmon traces if anyone wants to see the gory details.
John P. Hoekstra
[EMAIL PROTECTED]
Macatawa Computer Services, Inc.
68-70 West 8th Street
Holland MI 49423-3159
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