Looks like I messed up big time! Postfix was sometimes trying to use a IP registred on eth0 that caused delivery to fail due to recipeint couldn't resolve a hostname from that IP(This IP was not connected to any domain yet). Ok, saw some mails from a cutomer in postfix que that couldn't get delivered due to this. An me "the genius" thought that I just could un-activate that specific IP from the active network interfaces.... ticked the box for that interface, and hit "un-activate" button (don't actually remeber the exact button name)... Yepp I really did un-activate it AND the whole network(I think) at the same time, and now I have an unreachable server. Have ANYONE some ideas how I should do to reach the server so I can do a restart, all interfaces ar still in the active at bootup. But I can't reach the server to do this!
Any help is really appreciated.
This is really not good becauce earlier today we hade one of our biggest ISP fiber network breaking down and their redundance didn't kick in, leaving about 30000 websites/server without internet connection for about 4 hours, including our server. And now this... my really f..... up!! :-(
Our customers do NOT like this!
Please feel free to jump in any time with nice solutions!