At Mon, 18 Oct 2010 00:30:11 +0200 CentOS mailing list centos@centos.org wrote:
On Sun, Oct 17, 2010 at 23:57, Robert Heller heller@deepsoft.com wrote:
Quoting from "Highlander": "There can be only one."
I have to read that! I'm in the middle of Dune now...
For any given service (SMTP in this case), there can be only one listener. One cannot run two MTAs at the same time (unless one is using a non-standard port for one).
Actually, this server has four IP addresses: one each on eth0, eth0:0, eth0:1, and eth0:2. Would it be possible to run an arbitrary service (it's actually a Java-based game server) on port 80 on one IP address, and Apache on port 80 on another IP address?
Possible, but it would require some trickyness in the config files to limit the services to only listen on certain IP addresses.