Outside email shows "permanently undeliverable message"

I just sent an email to my troop members through my outside email, not through Troop Track. Then I received a message from Troop Track that said my message was “permanently undeliverable to all recipients”, although I did not send the message through Troop Track. How is this possible?

Also, I saw my message was in the “Sent” items box in my Hotmail account, so it looks like the message went through to everybody. Not sure what to think of this or what to do about it. Thanks for any suggestions!

Hi @CherylLandazuri,

Thank you for asking your question here.

Did you send the email to a magic mailing list (ie. adults@trooptrack.com)?

No, I didn’t use any emails like that.

Thank you.