Well, my server timeout issues are continuing to occur, but they've been
pretty intermittent. A little experiment last night, however, may have
given us something for IBM to gnaw on. We had noticed early on that every
time one of these timeouts would occur, there would be an associated
message that had experienced delivery issues.
Analysis showed that those delivery issues were consistently a failure of
the Domino server to respond to the sending server in a timely manner. The
sending server (our mail filter) has a 90-second timeout. We have
documented a few cases where the Domino server took over five minutes to
return an ACK to the sending server, by which time the sending server had
long given up.
Last night, I took the text of one of these suspected problem messages and
manually sent it to the Domino server via telnet. The intent was to see
if we could get the server to timeout on demand. This was successful (or
there was an amazing coincidence), so it definitely appears that there is
something in the message itself that caused the problem. We have looked
at many, many of these messages and have yet to find anything in common
between them. Some were HTML messages, but the vast majority of them were
text messages. In fact, messages from another mailing list I subscribe to
have been the culprit on several occasions, and it doesn't support HTML of
any kind.
Does anyone have any ideas of what I should be looking for in the messages
that might be causing this?
Thanks,
Patrick
