Hi there,
I can help you resolve the issue and get your server working fine again. I have extensive experience doing System/Server Administration and should be able to get your server back up and running with any problems.
I did have a quick question for you, what version of Ubuntu are you running?
Let me know about it. If you have any questions, do not hesitate to let me know and I will get back to you asap.
Look forward to hearing from you, and working with you.
Regards,
V