Server Timeouts without error message

[Schnietzel]

Title Server Timeouts without error message

Launcher Type Server

Modpack Infinity Evolved

Modpack version 2.5.0

Have you modified the pack? No

Link to log file http://paste.feed-the-beast.com/view/6d609a0e

Details of the issue We host our FTB Server on a root-server we rent.
The connection to this server is very good, and the performance is suitable for an ftb Server, as we played FTB for months without any problems.
But a week ago this problem first occured. I tried to enter the nether, but couldn't open any gates and short after I timeouted. I looked up the server log, but it didn't say anything. I couldn't join the server afterwards.
After a few Minutes a Message showed up in the Server logs saying "Server is lagging x ms behind".
A restart didn't change anything.
I also tried to delete the Nether Dimension, but that didn't do it either. The only thing that worked was to restore a backup. Then it was quiet for a week, but yesterday the problem occured a second time, again by entering the nether.
I let the server run over the night, and now it doesn't say "server is lagging behind" anymore, but when I try to join, I timeout a few seconds afterwards anyways.

Why is this, what causes this problem?

 

[mc.crab]

Check McMyAdmin settings, IIRC there is a setting that restarts the server if it thinks it's crashed and it doesn't always work.

 

[Henry Link]

Also, I should point out that if you want further support from us put the server back into online mode. FTB doesn't support servers that are running in the offline mode.