Problem: After datacenter tech did something, domains that were workign FINE on my server now don't resolve! :-( History: I was following advice found in another thread about hardening my server. I edited /etc/ssh/sshd_config to change the SSH port, forgetting that since I'd already installed APF, I locked myself out of SSH (i.e. SSH port being blocked by APF). Yes, stupid mistake. So the datacenter tech who had to go to the machine didn't understand the concept of making ROOT not be able to login via SSH. That is, I log in via another username, then 'su' to root... I know that they didn't merely undo my changes to that config file, because my other changes were COMPLETELY undone, and the file is obviously reset to the oritinal - they restored it from somewhere. Can anyone think of anything I can check to see why my domains aren't working now? At first, ALL other domains were down. But now, without me diong anything, SOME of them are back up, but SOME of them are not! and that has stabalized -- the problem started about 5 hours ago, and for the last couple of hours, nothing has changed. Any ideas on what to check? I am somewhat of a newbie -- though hey, at least I figured out what I did wrong on locking myself out... I've done windows tech support for Microsoft, I'm just not a Linux/server guy - I'm still learning! Any ideas would be massively appreciated!