Rule to force BCC with a Distribution List

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Contributor

Hi,

I'm trying to build a rule to reject a message with explanation when a given Distribution List is used in fields "To" or "CC". The goal is to force users to use "BCC" with this DL.

 

So far I found the header "X-MS-Exchange-Organization-BCC" could eventually help but I'm not sure how to use it.

Help appreciated :)

1 Reply
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Hi @Djavan ROA,

 

try to use a transport rule with condition

 

"When the recipient is a member of 'yourgroup'"

 

and  exception

 

"The To or CC box contains a member of 'yourgroup'"