Knowledgebase: Edgewave
550 5.7.1 Message rejected as spam by Content Filtering
Posted by on 10 June 2014 05:31 PM
Question:
550 5.7.1 Message rejected as spam by Content Filtering
 
 
 
Answer:

Description

 

“550 5.7.1 Message rejected as spam by Content Filtering”

 

This error occurs when sending to an Exchange 2007 or later server.


Cause

 

Email messages that are very nearly empty in content may be caught by one of the default filtering options turned on in Exchange 2007. This error is generated by the default-enabled Content Filtering anti-spam option under Hub Transport>Anti-Spam.


Resolution/Workaround

 

  1. From the Exchange program group:
  2. Open the Exchange Management Console. Next, depending on the server type, select either or:
    1. Microsoft Exchange | Edge Transport | Anti-Spam
    2. Microsoft Exchange | Organization Configuration | Hub Transport | Anti-Spam

 

All of the filter types are enabled by default, and if the server's mail traffic is filtered by McAfee, it is not necessary to keep them enabled. 

 

  1. Open the Content Filtering anti-spam filtering type and go to the Action tab.
  2. Then uncheck the box next to "Reject messages that have SCL rating greater or equal to:"

 

Additional Information

See http://technet.microsoft.com/en-us/library/aa995995%28EXCHG.80%29.aspx  and

http://social.technet.microsoft.com/Forums/en-US/exchangesvrantivirusandantispam/thread/fc36bdf9-1e50-447f-81fe-e626e3040af2

for more information.


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