Hello,
My apologies in advance for the length of this, but I want to be as through
as possible the first time.
The background:
Dell Poweredge 6400,
Imail 6.06
Windows 2000 Server, SP2
Quad Xeon 733 mhz
Declude 1.60, running Virus and Junkmail
McAfee 4.1.60, Dat file 4229
4GB Ram
All drives ultra scsi, lvd, 10,0000 rpm or better
C: 2-18 gb, hardware raid 1, OS drive
E: 18 gb Imail and Spool drive
F: 2-36 gb hardware raid 1 for the main domain, +\- 15,000 accounts
G: 2-18 gb hardware raid 1 for the hosted domains, +\- 100 domains, +\- 500
accounts total
375,000-400,000 messages per day
On Friday last week, we installed SP3 and let Microsoft (from
windowsupdates.microsoft.com) perform the required/recommended hot patches.
Since that time, our customer base has been seeing an increasing number of
smtp connect failures. We are seeing the same thing on our internal lan as
well. Sometimes, it will fail in less than a second with Outlook/Outlook
Express/Eudora reporting that the tcp/ip connection was unexpectedly
terminated by the server. Other times, it will take 45-60 seconds for the
error to occur. One time out of 5, it will send the message, but only after
a 45-60 second wait.
So far, we have:
Reinstalled 2000, sp2, Imail, McAfee and Declude from fresh files, onto
formatted drives, effectively undoing all of the changes that were made
Friday.
Changed from Intel Pro 100+ to Allied Telesyn Nics, and back
Updated Nic drivers for the intels
Stopped Declude totally
Added MaxQueProc=30
Verified not a DOS attack
Virus Scanned the entire system
Changed network cables
Changed ports on the switch
Moved/Increased/Decreased the pagefile
We have been though the Imail Knowledge base, the Declude list archives, and
the Imail list archives. It seems that SMTPD32.exe is the issue, but we are
not sure. Any assistance/advice will be greatly appreciated
Thank you in advance for any assistance
Bill
Domain Mail Administrator
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