Thanks Sanford -
1. DKIM is in hand, but my issue is that Mimecast says there is no way to whitelist our Marketo instance via DKIM, and IT does not see a way to do it within Mimec...
Sanford -
Under email suspended cause I'm seeing "550 Rejected by header based Anti-Spoofing policy: myemail@mycompany.com - https://community.mimecast.com/docs/DOC-1369#550 [8jrT...
I have been unable to whitelist Marketo emails from our instance so that they can be received internally.
The main causes for the Marketo emails being rejected include ‘Rejected by...