We are getting ready to do a network-wide upgrade to Exchange 2010. The url for the old 2007 mailboxes is at
and users who have had their mail box moved will have to go to
If a user that has a 2010 mailbox attempts to login at the 2007 OWA location, they get a standard
403 Forbidden page. We would like to show them a page of our own making, that includes a link to the 2010 OWA login page.
I assumed we could do this with an IIS Custom Error page, but setting the
403.4 error page in IIS on the Default web site doesn't seem to be working.
Does anyone know how we could get around this?
BTW, our OWA for the 2007 boxes in on Windows Server 2003, and IIS 6
Ok, so I don't think I explained the issue right (I'm just now starting to understand the issue myself..). We basically have users who can authenticate, but don't have a mailbox on the 2007 exchange server. Their is a custom error page for all 403.4 errors, that directs a user from http to https. However, when a user without a mailbox tries to log in, no error page is actually getting sent from the server, just a 403 status code.