Hi,
I am having a somewhat mysterious network problem that I suspect is due to
some setting on our Windows NT 4.0 server.
We are using our Exchange server to directly send outgoing e-mail through
our router/firewall. Sometimes a message fails to reach its destination
because of what is reported as network errors. It is not consistently
reproducible. That is, that some of the e-mail servers we have problems with
will sometimes accept a message from us.
The event log reports event 3010 (An attempt to connect to host xxx
failed. ) from the internet mail connector. When I trace the SMTP session it
always fits the pattern below. The destination servers fit no pattern. This
happens when talking to sendmail, Lotus, Exchange, and other systems.
5/7/02 12:21:02 AM : A connection to 65.165.203.5 was established.
5/7/02 12:21:03 AM : <<< 220 X1 NT-ESMTP Server
dcpems00.dotcomdatacenter.com (IMail 6.06 50439-1)
5/7/02 12:21:03 AM : >>> EHLO fengor.holland.factoryinsite.com
5/7/02 12:21:03 AM : <<< 250-dcpems00.dotcomdatacenter.com says hello
250-SIZE 0
250-8BITMIME
250-DSN
250-ETRN
250-AUTH LOGIN CRAM-MD5
250-AUTH=LOGIN
250 EXPN
5/7/02 12:21:03 AM : >>> MAIL FROM:<[EMAIL PROTECTED]> SIZE=15290
5/7/02 12:21:03 AM : <<< 250 ok
5/7/02 12:21:03 AM : >>> RCPT TO:<[EMAIL PROTECTED]>
5/7/02 12:21:04 AM : <<< 250 ok its for <[EMAIL PROTECTED]>
5/7/02 12:21:04 AM : >>> DATA
5/7/02 12:21:04 AM : <<< 354 ok, send it; end with <CRLF>.<CRLF>
5/7/02 12:22:57 AM : 499 Host unreachable: albaxinc.com. Message subject:
"""". Rescheduling delivery for later.
This makes me wonder whether I have some buffer setting somewhere set too
big to allow reliable communications.
Does anyone have any ideas?
John P. Hoekstra
[EMAIL PROTECTED]
Macatawa Computer Services, Inc.
68-70 West 8th Street
Holland MI 49423-3159
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