hi, i am trying to setup a mail server in my office. i am bale to access the ispbox using https://192.168.1.200:81 but not https://www.abc.com:81 i have a registered domain but not using it right now on the ispbox. i have a static ip assigned to my router. the setup is router--systems my /etc/hosts conf is 127.0.0.1 localhost.localdomain localhost 192.168.1.200 abc.com abc ::1 abc.com abc localhost.localdomain localhost /etc/resolv.conf search abc.com nameserver 127.0.0.1 nameserver 192.168.1.200 i just wanna setup a mail server as of now sending & receiving mails both internally and externally . i would post any other configuration/output if needed. any help would be greatly appreciated.