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strange email problem

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strange email problem - 6.Dec.2007 12:00:16 PM   
drublic1019

 

Posts: 6
Joined: 7.Feb.2007
Status: offline
I am having a very strange pop3 problem with two of my users. I have a 1.5 mbps T-1 and MS ISA 2006. I have two visitors in the office this week who are having trouble downloading their mail. Their outlook is setup to receive on port 110 and send on port 587. They can send just fine but they cannot receive their email all of the time. It is completely random. Yesterday morning they could not receive then in the afternoon there was no problem. Now this morning they could receive mail until about 11 then it started erroring out again.

I have checked ISA and it is not blocking either of those ports and I can see them going in and out. I have talk with my ISP and they confirmed they are not block those port either. Which I would not think would be the issue because if either was blocking it, it would never work.

I was wondering if the problem could be because the email server they are contacting is in france and we are in texas. I have done a trace route on both the inbound and outbound. The outbound takes 132 ms to reach it and the inbound take 143 ms. I the time out in outlook is 3 minutes so that should be
more than enough time.

Does anyone have any idea what could cause this?  Could this be an issue
with ISA because they are not part of my domain?
Post #: 1
RE: strange email problem - 6.Dec.2007 2:45:14 PM   
spouseele

 

Posts: 12830
Joined: 1.Jun.2001
From: Belgium
Status: offline
Hi drublic1019,

if the ISA logging doesn't indicate any problem, then taking a network monitor trace of a failing session is your best option to diagnoses such kind of problems.

HTH,
Stefaan

(in reply to drublic1019)
Post #: 2

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