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Cannot Authenticate to POP Server on ANY Mobile Phone

Tercestisi asked
Last Modified: 2013-12-17
Moving a few Treo 700's from Alltel from Exchange to POP3 because of a company acquisition and I cannot seem to authenticate to the POP mail server.  When I send/receive on the Treo, it goes back to the screen where I have to enter in the password.  I know the server settings are correct and that the username and password I am supplying is correct... but it always asks me for the password again. I've tried replicating the settings on an HTC PPC6800 and the same issue arrises. If I replicate the settings to Outlook on a laptop... everything goes fine.  


Any ideas as to what may be going on at the mail server? The mail server is sendmail but I do not have shell access.
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