Right, I've finished crawling now. We use Exchange 5.5 and some software I've written recently accesses mailboxes on the server via POP3. It works nicely but if I change the login account associated with the exchange mailbox, the POP3 login account doesn't change to match. I have to recreate the mailbox to get a new POP3 login account. I haven't been able to find anywhere to set the POP3 details independently but maybe one of you good people is better at Exchange than I am. Before anyone asks, I'm using POP3 because some of my software runs as a service and some is intended to limit multiple users access to a single mailbox. For both these reasons MAPI isn't the best choice. Regards Angus