Email from outside email address TT to a mailbox for certain members

Hi I created a mailbox to have non members to send emails requesting troop information to a group of adults but I just get an error saying:

We couldn’t find a TroopTrack account associated with the email address used to send this message.
TroopTrack email lists are only for use by registered members using the email address tied to their account.
Please correct this problem and try again.
Please do not reply to this message.

Hi @ericsiebold2,

Users must be in your Troop in order to send to a mailbox, but they don’t need to be an authorized sender. Anyone in your Troop can send to those.

Thanks,

David Keener
TroopTrack