I searched before I posted, but apparently I don't know what to be searching for. Thank you for the wiki link - unfortunately I was unable to find anything useful there, nothing on that page appeared to be applicable. Most of the problems assume that the logger service isn't running. Mine is running, but I'm unable to connect to MySQL, and get the error 'too many connections'.
Searching for 'too many connections', I did come up with this thread:
[SOLVED] Daily reports stopped sending - Mysql Too many connections
The fix seems to be increasing the line:
max_connections = 10
in /opt/zimbra/cong/my.logger.cnf
Is there danger in doing this? And what is a safe number to increase it to?
Thanks again for any assistance