When I try to bring webmail up in my browser with the following: https://www.domainname.com:81/webmail my browser automatically changes the address to: https://server1.domainname.com:81/webmail. I then have to edit sever1 back to www, at which point the browser can access webmail. Anyone have any ideas about how to fix this?
I guess you entered server1.domainname.com as you installed ISPConfig. To change thsi, you will have to change the hostname in /root/ispconfig/httpd/conf/httpd.conf and then restart ispconfig.