[imp] Configuration with an auxiliar IMAP server

[Jorge Izquierdo]

Hi everebody, I´m back

I need a specific configuration for my webmail server. I´m using IMP 2.2.3
with Horde 1.2.3 and Courier IMAP. I need that the webmail will ask a
preferred IMAP server to connect to the mailboxes but if this server is not
working it must be able to connect to another one in a different machine. Is
this posible? May I specify one second server that will connect my IMP when
the preferred one is down with no work form the users?

Thanks for your solutions

Jorge