multiple server redirect to home server.

[gothge]

I like to setup up something like this:

User goes to https://mail.example.com, enters username and password, if user is valid user will be redirect to https://mail01.example.com or https://mail25.example.com dependent on a database setting or "IMAP4 Login Referrals"

Is this possible out of the box or do I need to hack the code. (which I don't want to)

[SKaero]

It seems like it would make sence to just build your own login page that does that check and host it on https://mail.example.com and then host Roundcube on https://mail01.example.com or https://mail25.example.com