Troubleshooting SpamAssassin?

Hello, I am running a VPS with cPanel/WHM 11.44.0. In the last three weeks I have had issues with SpamAssassin. It has started failing. Restarting Exim resolves the issue although anywhere from 2-5 days later it fails again. I am trying to troubleshoot the issue and am not getting far. I have checked the exam_mainlog and can see exactly when SpamAssassin stops working and there are a few spamd error messages:

2014-07-21 14:39:48 1X9KNA-0004ey-5H spam acl condition: warning - spamd connection to 127.0.0.1, port 783 failed: Connection refused
2014-07-21 14:39:48 1X9KNA-0004ey-5H spam acl condition: all spamd servers failed
2014-07-21 14:39:48 1X9KNA-0004ey-5H H=(00a3caa4.33url.eu) [XX.XXX.XX.XXX]:38010 Warning: "SpamAssassin as accountname detected message as NOT spam ()"

I am wondering if there was a buggy version of SpamAssassin released recently or something similar? My system has run very well for over a year. I am looking for guidance on what to look at next.

Any help will be greatly appreciated.

 

Thank you for the suggestion. The change has been made. I will see how things go and report back in a week or two with the results (sooner if SpamAssassin still fails).