[imp] one webmailer for all vhosts

[Benedikt Wolters]

Hi!

I have many vhosts on my machine with imp but i would like to have only 
one webmail-login-screen for all customers. this webmailer should use 
https://webmail.xyz.com .

works fine with email adresse with xyz.com but customers with different 
adresses can't login.

Is there a way to realise one webmailer for many domains? (all domains 
on same server)

Greetings
Ben