Sharing calender across different domains

[Keith Simon]

Greetings, I hope I have posted this question in the right forum. If not,
please let me know where I should re-direct:

I have 2 exchange organizations, org 1 and org 2. Both are on different
domains org 1 is on Domain A, org 2 is on Domain B. For security reasons,
the domain forests do not share a trust. My question is, how can I allow a
user in org 1 to share his callender with a user in org 2?

Thanks for your help!

 

[Diane Poremsky [MVP]]

AFAIK you can't, but ask in the exchange newsgroups - that is where the
server side experts hang out and this is a server side question.