If I move to a hosted IMAP mail server solution (e.g. Google Apps) is there a way to have an on-site back up of the mail server that can be used as a local mail archive and backup solution? What would I need to set up internally to achieve this?
A hosted solution is very attractive for a small company but With potential lose of internet connect I need my users to always get at their e-mail.
What are the options for such a hybrid mail solution?
