If the isp_server table is missing or empty, it might be a good idea to completely re-install your server, following "The perfect setup" for your...
Yes, it still uses port 25. Yannick
You can find some custom rulesets on the following pages. As far as I've tested, they do a pretty good job....
Look here: http://www.skype.com/help/guides/firewall.html I don't think Skype has problems with most firewalls as it can use the ports 443 and...
Or open your computer and have a look at your network card... :)
postconf -d | grep mail_version Yannick
Depends on your distro and on your firewall... In general it's a good idea to have a look at the init scripts in /etc/init.d. Maybe there's one...
Separate names with a comma.