External meeting invitations error

When we try to send a meeting invitation to an external email domain, we get the error “You are not authorized to access that database”.Then the meeting host doesn’t get the meeting saved in his calendar, the (internal) guests do.

Server & client 8.5.1, DB ODS 51.

Has anyone experienced/solved the same problem?

Subject: Host has no calendar entry

One of my customers has this problem also after we upgraded to ODS51. Trying to find something in the forums.

Subject: may I know if i can help?

Can you describe a bit more about the problem, please?