I have mail server in my office and there is also running a Webmail.
Another company requesting me to using my mail server they want the same Webmail support.
But their domain name is different.
AndI run there Sendmail
Our domain name is www.office.com
Webmail address is http://mail.office.com/webmail
Another company's domain name is www.other.org
Requesting Webmail Address might be http://mail.other.org/webmail
What could be the cahanges needed in my mail server.
N.B.- All e-mail and Domains are in Public IP.