If you receive this alert:
ALERT: exim paniclog /var/log/exim/paniclog has non-zero size, mail system possibly broken
after you upgraded Directadmin version, here we will let you know why it happens.
It's a new feature in Directadmin which is available since its 1.522 version and is already available as a pre-release binary (which you need to use for evolution skin to work):
It's said there:
based on directadmin.conf setting (internal default)
This check will be done every minute.
If the file exists and has a size greater than 0, then a notice will be sent to all Admins in the Message System.
First of all I'd suggest that you check content of /var/log/exim/paniclog and resolve all the errors from it. It might be very important.
If you still want to disable it, then run these commands:
echo "exim_paniclog=0" >> /usr/local/directadmin/conf/directadmin.conf
service directadmin restart