I have one Exchange 2010 SP2 server with ALL roles. Access, Hub, Mail. And in the same domain I have set up one more Exchange 2010 SP3 server with ALL roles. This because I need to move some users to a new Exchange before I have downtime on the old server to move it to a new location.
I maked a mailbox on the SP2 server and test mail flow. Everything works fine :-)
I moved the mailbox to the SP3 server, and I can still connect to the mailboks with phone sync and outlook, but I can not send mail and recieve mail.
When I try to send mail from OWA the messages stuck in Drafts folder. Sent mails from Outlook stuck in outbox. No mail goes out :-(
I have a lot of space on the disk ;-)
Someone have an idea?