I have a user who does not have a mailbox. However, he needs write access a calendar in an Exchange 2010 mailbox. The way I used to handle this on my Exchange 2003 server was to give the user permissions to the mailbox and then have them go to
https://exchange2003.mycompany.com/exchange/mailboxalias/Calendar When prompted they logged on with their own domain account instead of the credentials for mailboxalias. Since they had permissions to the mailbox they were allowed access. I had my user try https://exchange2010.mycompany.com /exchange/mailboxalias/Calendar<https://exchange2010.mycompany.com%20/exchange/mailboxalias/Calendar> He logged on but it tells him the URL isn't valid. Is there a URL that would work with this technique? Is there an alternate approach for users who don't have a mailbox of their own but need to have write permissions to a resource calendar that is not his own? I have Internet Calendar sharing enabled for people who just need to view the calendar but this guy needs to make changes to it. Thanks for your help. Curt
