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grrrrrrr..help
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grrrrrrr..help - 4.Jan.2006 5:20:39 PM
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ealdridge
Posts: 84
Joined: 15.Nov.2005
Status: offline
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okay, so this problem is going to do me in... its a Random issue... every now and then when a customer is checking their mail with a pop3 client, it gives a message saying "your connection to the server has been terminitated.." now when i check the logs in the FW.. i get this...
im not sure if its the mail server or the firewall - btw, im running Imail for the email server...
heres the logs, ive replaced the ip address with "ip" .. for better a better viewing experience, ive uploaded this to my server ... as a .txt file :) http://edward.visualcomposer.com/pop3.txt
.
< Message edited by ealdridge -- 4.Jan.2006 5:22:01 PM >
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RE: grrrrrrr..help - 4.Jan.2006 8:44:42 PM
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spouseele
Posts: 12782
Joined: 1.Jun.2001
From: Belgium
Status: offline
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Hi ealdridge,
yep... that article only applies to ISA 2000, although you could use the same methodology to attack your specific problem. In other words, try if you can simulate the problem with the listed command file and if so, take a network monitor trace on the ISA external interface to find out what is really happening on the wire.
HTH,
Stefaan
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RE: grrrrrrr..help - 9.Jan.2006 5:02:46 PM
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ealdridge
Posts: 84
Joined: 15.Nov.2005
Status: offline
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okay, heres a netmon log from the ISA servers external interface, while running that command file from a client machine...
http://edward.visualcomposer.com/netcap.cap
hope this helps....
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RE: grrrrrrr..help - 9.Jan.2006 5:06:52 PM
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ealdridge
Posts: 84
Joined: 15.Nov.2005
Status: offline
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btw..this has moved up to the 2nd teir at MS support.. the first guy ended up not being able to figure it out ....
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RE: grrrrrrr..help - 9.Jan.2006 5:43:37 PM
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tshinder
Posts: 47490
Joined: 10.Jan.2001
From: Texas
Status: offline
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quote:
ORIGINAL: ealdridge
btw..this has moved up to the 2nd teir at MS support.. the first guy ended up not being able to figure it out ....
Hi E,
Cool. Let us know what you find out.
Thanks!
Tom
_____________________________
Thomas W Shinder, M.D.
Sr. Consultant/Technical Writer
Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/
GET THE NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8
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RE: grrrrrrr..help - 11.Jan.2006 8:29:23 PM
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ealdridge
Posts: 84
Joined: 15.Nov.2005
Status: offline
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update...
updated the network drivers on the server at 9:50AM
its now 1:30PM -
i havnet had any "failed connection attempts" - yet!..... lets pray that this fixes it....
pfff.. i should have check all network drivers in the first place!
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RE: grrrrrrr..help - 12.Jan.2006 4:55:17 PM
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tshinder
Posts: 47490
Joined: 10.Jan.2001
From: Texas
Status: offline
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Hi Edward,
Ha! For performance issues I might have thought about that, but selective POP3 problems? If that ends up being the cause, it'll be great to put that in as a tip in the next newsletter!
Thanks!
Tom
_____________________________
Thomas W Shinder, M.D.
Sr. Consultant/Technical Writer
Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/
GET THE NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8
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RE: grrrrrrr..help - 13.Jan.2006 3:32:55 PM
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ealdridge
Posts: 84
Joined: 15.Nov.2005
Status: offline
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quote:
ORIGINAL: tshinder
Hi Edward,
Ha! For performance issues I might have thought about that, but selective POP3 problems? If that ends up being the cause, it'll be great to put that in as a tip in the next newsletter!
Thanks!
Tom
wasnt the issue.. but.. .it cant help but to update the network drivers.. i think i have FINALLY solved the issue..(no help from Microsoft though)....
in my POP3 / SMTP rules.. i changed the setting....
on the "TO" tab of the rule......
changed the setting FROM -> requests appear to come from the original CLIENT... TO -> requests appear to come from the ISA server
this has seemed to fix my problem.. i changed the rules yesterday at 9AM and so far (24 hours later) i havent had a SINGLE failure...
this should be a darned sticky for people having this issue :)
-thanks for the help guys!
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RE: grrrrrrr..help - 16.Jan.2006 1:49:33 PM
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ealdridge
Posts: 84
Joined: 15.Nov.2005
Status: offline
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yep the rule was deffo the issue... monday morning..and still no failure's in the logs...
see previous post regarding fix :)
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RE: grrrrrrr..help - 16.Jan.2006 3:40:27 PM
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tshinder
Posts: 47490
Joined: 10.Jan.2001
From: Texas
Status: offline
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Hi Edward,
Hmmm. Now its getting interesting again! I wonder if this is an MTU issue? Do you know if Path MTU Discovery is enabled on the ISA firewall?
Thanks!
Tom
_____________________________
Thomas W Shinder, M.D.
Sr. Consultant/Technical Writer
Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/
GET THE NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8
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RE: grrrrrrr..help - 16.Jan.2006 4:36:17 PM
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ealdridge
Posts: 84
Joined: 15.Nov.2005
Status: offline
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quote:
ORIGINAL: tshinder
Hi Edward,
Hmmm. Now its getting interesting again! I wonder if this is an MTU issue? Do you know if Path MTU Discovery is enabled on the ISA firewall?
Thanks!
Tom
hmm... is there a setting in the ISA software or are you referring to the MTU setting in the registry ...
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