Send/Receive error with Outlook

Windows 2003 SBS running DNS & DHCP. Network = 8 Windows XP-Pro desktops, 2 XP-Pro laptops.

Users are complaining that 5-10 times per day they will get a Send/Receive error in Outlook, stating that their pop server did not respond. Any ideas why they are getting this message? Obviously they aren't getting out to the internet. DNS is setup with forwarders..... HELP!
pchservicesINAsked:
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sunray_2003Commented:
>> Obviously they aren't getting out to the internet.

Is that done on purpose ?

So they have issues only with POP3 accounts in their outlook and what is the exact error message that they get ?

Can they ping those mail servers and check ?

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pchservicesINAuthor Commented:
No it is not done on purpose. They can reach the internet just fine. I haven't checked to see if they can ping their mail servers or not.
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sunray_2003Commented:
in your question you said " they cannot reach internet fine " 
your last comment u r saying " they can reach internet fine"  ???

is there any firewall involved here ?

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pchservicesINAuthor Commented:
No firewall.

That is my assumption >>that they aren't getting out to the internet.

They may get the S/R while they are surfing the web.

Make sense?
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sunray_2003Commented:
can u make sure that your internet is stabilised first and then we can work on outlook.. check the connections first.
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pchservicesINAuthor Commented:
the connection is fine. They can browe the web perectly!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
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sunray_2003Commented:
if the connect is fine all the time then check to see if they can ping the mail server.
try to remove the pop account and create them again and see what happens
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pchservicesINAuthor Commented:
Ok thanks I will try that.
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Windows Server 2003

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