Have you already created mail contacts corresponding to the external user's email addresses
If not, add the mail contacts and try again adding to the groups
--please don't forget to upvote
and Accept as answer
if the reply is helpful--
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I am trying to create a distribution list that includes our physician's personal emails (they aren't great at checking their company email). THis is the error I get when I try to add one. **the blue is the name.
Anyone know how to get around this?
Have you already created mail contacts corresponding to the external user's email addresses
If not, add the mail contacts and try again adding to the groups
--please don't forget to upvote
and Accept as answer
if the reply is helpful--
My Exchange admin looks a little different which I believe is because I am part of an organization and they control most of the settings. I will try reaching out to IT to see if there is a way to get around this issue.
Thank you for your help!