we are running sbs2008 with exchange 2007. One user suddenly can't receive emails from one external sender any more and the sender never gets a return email. That user has to use hotmail or gmail etc to send to that sender.
I am thinking must be blocked in somewhere but could not find it. Any direction can point me to? Thanks.
Update 1:
With Exchange Troubleshooting Assistant, I track down all mails sent from that sender, have been marked spams in the subject:
***SPAM***
I guess the spam then be deleted by server quietly?? I will need to check spam settings and come back later. Thanks.
Update 2:
I found in Anti-Spam -> Content Filter:
If the message contains "SPAM", will be blocked.
Option1: Is it a good practice to have this kind of setting here? because no one is acknowledged about this deletion. On the other side, if I remove this policy, I may get hundreds of SPAM in our Inbox.
Option2: How do I define a while list, so mails from certain sender will not be marked as SPAM?
Update 3:
OK - I am totally cool now.
I am using this GUI tool to manage the whilelist for anti-spam:
http://gsexdev.blogspot.com/2009/02/content-filtering-system-whitelist-gui.html
Thanks guys.
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