Openwebmail and Nginx...

[Winnie]

Dear all,

I have 2 openwebmail servers behind one Nginx server.....also, openwebmail
server A contain user name A to user name K and openwebmail server B contain
user name L to user name Z....then,for example, how can "user A" login
openwebmail server A automatically (without knowning server A ip address, only
typing Nginx ip address)...do i need to install openwebmail in Nginx server??? I
don't know how to do this "proxy" ??....I can't find any articles related to
openwebmail servers and Nginx server....

thanks for all of you...

many thanks again...

regards,
winnie