Hello
I am wanting to use a transport rule to help our users identify email originating from outside of the domain. In this rule I have prepended the Subject line with "External" and also prepended the message with a Banner. As we have several trusted sources which send email to our users I have added a list of Exceptions using "Except when the From address contains". Within this list of exceptions are multiple List Serve addresses, these address continue to get the external tags despite being listed as exceptions. We have several Lists, each of which are added as Mail Contacts on ourExchange 2010 environment.
I am hoping you all can help me identify where I went wrong, and help me resolve this issue. At this point this banner is in a testing phase and is expected to roll out to the rest of the domain once this issue is resolved.
Current Exceptions:
Except if the message:
Is received from 'Inside the organization'
or Includes these words in the message subject: '[External] '
or Includes these words in the sender's address:
Any suggestions are appreciated