I have my cisco router doing nat for my only public ip address, a.b.c.d. I have my zone file set on my dns server to point my web, mail, and dns to my public ip a.b.c.d.
My question is this. I want people that type in webmail.example.com to go to the mail servers web page and the people who type in www.example.com
to go to the www server. But I only have 1 ip and the both use port 80. So i made the router use 8080 for webmail but i dont know how to set that in dns.