'Exchange Online MailFlow Rule - Identify recipient group by display name
Using O365 Exchange Online, I have a scenario where I've got a bunch of distribution lists whose display name is in the format "CDL-blahblah" but their email address is not necessarily predictable. I want to prepend a disclaimer on messages such as these using an Exchange Mail Flow Rule. I have attempted variations of the following, but this does not seem to identify messages to these lists correctly:
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