I'm on mIRC V6.35 and keeping getting this error message:

* Connecting to irc.acidchat.net (6667)
* Unable to connect to server (Connection timed out)

I've tried changing ports and increasing the time before mIRC retries to 180 seconds but they've not helped. I've also tried connecting to different servers with the same problem, and using the IP address of the servers I want to connect to. It must be to do with being on my uni network connection as I had this problem before, it was fixed when I went back home, and now it's returned.

What aren't I doing to fix this!?