duplicate emails in outlook 2007 inbox

I have a client who was out of town for the last 4 days.  He said he was receiving emails to his iphone while he was away.  When he logged in to his computer at the office he received over 3000 emails.  I have a setting on the account setup where he's emails are saved on the pop3 server for 5 days.  I logged on to the server and he only has a little over 300 emails.

What happend is in outlook he received each email 10 times.

Question is how does this happen?  What could have caused it?

rrinconesAsked:
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ultrapuggyCommented:
Please try this, it may help:
click on "Tools", choose "Email Accounts", choose "Change or edit and existing account", highlight your POP3 account, then click on the "Change" button.. When that opens, click on the "More Settings" button, then the "Advanced" button. UNCHECK the box that says: "Leave a copy of message on the server". OK and Apply your way out.

Let me know if that helps!
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ashishkpandeyCommented:
This is caused by the iPhone. Wipe out the settings for email on iPhone and then reconfigure back. Also update the firmware version on iPhone
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rrinconesAuthor Commented:
I called network solutions, they host the emails, and they said the Outlook's log file was corrupted or is out of synch.  We disabled send receive, deleted all the emails, and closed outlook.  They reindexed his mailbox. We started outlook and enabled send receive, so far the emails on the server downloaded once only.

Tech support at Network Solutions stated that if it happened again, I should fix the log file.  
Does anyone know how to do that?


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