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POP access unreliable on Exchange 2003 / SBS 2003 box

Posted on 2006-10-23
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Last Modified: 2010-04-19
On an otherwise stable and reliable SBS 2003 install, fully patched up to date, there are a couple users who need POP access to Exchange mailboxes and are using OE. Sometimes, the POP sessions are smooth and rapid, but mostly they time out and I can't see any reason why they should.

Nothing in the logs re the failed POP sessions.

Access via OWA is fine as is Outlook via RPC over HTTP and all other remote access types. Just POP mail.

Any suggestions? I realise this is none too easy as there is no concrete scenario where it fails, Just hoping someone else has experienced similar.
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Question by:richardbarlow
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Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 17794933
Why do they need POP3 access?  It's really not a good idea to use since you have those other two methods to retrieve email.  If anything, I'd have them use IMAP instead of POP3.

But if you really do need it... you should have them adjust the Server Timeout to more than 1 minute.  Because if you have an ADSL line with a slow upload speed, and they are grabbing messages with attachments, it can easily timeout within the default 1 minute setting.  Change it to at least 2 1/2 minutes.

I would suggest, though that instead of having them use POP3 to the SBS, you instead use GMail.  You can set up a Forward for their account to a GMail account and then they can POP3 from there.  Much better use of resources and more secure.  Plus you then have more control over archiving all incoming messages.  GMail allows you to send from any domain name after verification.

Jeff
TechSoEasy
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Author Comment

by:richardbarlow
ID: 17798785
Thanks for the gmail, IMPA etc suggestions, but I need to resolve the POP isue. Changing the timeout makes no difference. There can be a couple of 12KB messages in there that should take sub one second on the 512KN uplink speed connection, but 2 times out of 3 they get picked up. Anti-virus next on the list.
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Jeffrey Kane - TechSoEasy earned 1500 total points
ID: 17798873
Why do you need to resolve the POP3 issue... It's quite possible that your server is just overworked by offering POP3 access... it's really not an efficient way to work.  Wouldn't the GMail solution do the same thing for you? But instead, it wouldn't use POP3 from your server...and not taking up precious server resources?

Jeff
TechSoEasy
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LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 17798887
And it's true that AV could be clogging things up... and so could the Intelligent Message Filter if you have that installed.

Jeff
TechSoEasy
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