Problem People cannot join my server

[HalliganCP]

I created a server and it ran fine and recently it wont allow people to join at all saying they cannot connect to server as if it is down although it is running. I use Hamachi and the server is only on version 6 because of problems with mods. If that's the problem can you help me how to fix it or help me figure out whats wrong otherwise?

 

[Nessiroj]

the server makes logsfiles, can you paste those on pastebin and link them? that way we might see whats going wrong.

 

[MomoNasty]

have u set ur server properties correctly?