Forum Discussion
clive_smith
Apr 17, 2021Copper Contributor
How to identify whether inbound email originated from an Exchange server
I would like to set up a transport rule to identify inbound email which originated from other exchange servers. I thought this would be a simple matter of looking for some "magic" header, but so far I cannot find a definitive answer to this.
The assumption behind this is that those emails which originate from Exchange will natively support exchange message protection e.g. encryption etc. So if I am replying to an email flagged as originally being from an Exchange server I can then set up an outbound transport to auto-encrypt.
Any help would be appreciated.
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