Meeting request received as plain email

[Albert]

Hi,
I'm having a problem where meeting requests are being received as plain
emails.
This only happens between accounts in Exchange. When it's sent outside of
the organization like a home email that uses Outlook, it works fine. It also
works from a home email to an account on the Exchange server. Further, when
you put multiple invites where some are internal to Exchange and some are
external from an account in Exchange, only the externals get the proper
meeting request and the internal accounts get the plain email.
Please help.

 

[TechieBird]

This will most likely be to do with a setting on the infrastructure side of
things - you might have a better chance of getting a good answer if you try
one of the Exchange communities...