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scokerFlag for Canada

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Bizarre Authentication Problem

I am not able to successfully authenticate anyone in the office to their Outlook pop account. In addition to not being able to authenticate to the pop servers web interface.  Try this anywhere outside of the office and all accounts authenticate fine.
When I tracert to mail server I end up at correct IP address.
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yo_bee
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Are there any event logs on the client,exchange or DC that raise any attention?

Can you supply some details about your infrastructure (i.e.  DC and mail on the same server)
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ASKER

It sbs2003 but we never hosted our own mail. I will check for logs. The weird thing is the web portal to the pop server also fails.
Is this internal to internal or external to internal?
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ASKER

Internal to external hosted mail service we use
ASKER CERTIFIED SOLUTION
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yo_bee
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ASKER

Yes we do not pay for a static IP it changes all the time and we did get blocked because of some malware.  But I was assured by the mail provider that we were not being blocked but maybe he was mistaken.  Has to be the reason only thing that makes sense.  I will check again thanks.
I never trust just one answer from the providers. I like to always call back and hope for a another support tech.
any head way with this?
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Good call yo_bee they had blocked it
It is like I  had a similar issue once or twice.  ;)