i am migrating my company exchange server from on-premises to exchange on line.
Actually we have a server with ADConnect and we use the exchange we have as hybrid.
All works but i have a problem with some attachment in the emails.
We receive the email but the attachment (for example .pdf) cannot be opened.
I have found a workaround that is to ADD the sender to a list of SAFE SENDER.
The attachment is then seen in the message and can be saved.
As you can imagine we cannot add each time one-by-one a sender to have its attachment opened and then saved.
Any help ?
Thanks to all