Setup problems with pop email account

Setup problems with pop email account

HI
I am having a problem getting emails from a pop account.  Sending via the same account works fine.  The issue occours when I fill the pop details in on the mail server setting page and press save I get the following message.  
 
FAILURE : Email Settings saved successfully. But error occured while trying to check connection with mail server - Problem connecting to mailbox.
 
I have used google mail to test the pop account and can grab emails from the pop account with no problem.
 
I have also tried different pop accounts ( different providers)  incase it was an issue with a particular provider.
 
Is there any way I can get a more useful error message?
 
This would seem such a standard thing to do I am sure there is something obvious I am missing. 
 
Any information would be greatly appreciated.
 
Thanks
 
Ian Baker

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