cant receive email from outside the company

Giganews Newsgroups
Subject:cant receive email from outside the company
Posted by: Outbacker (Outback…@discussions.microsoft.com)
Date:Tue, 27 Feb 2007

yesterday all incoming email from outside customers just stopped. we can
email outside the company (like to a yahoo addy) and email within the company
but none of our customers email can reach us.
Why did this happen outof the blue 24hrs ago  what caused it and how can it
be fixed. thanks in advance for any help.

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