For anyone that has csf installed and running the latest version of cpanel you will notice that you are recieving emails that the process is not restarting and running over the alloted time of 1800. Please use this information below to fix the issue.
Step 1 login to ssh console.
Step 2 Edit cfs.pignore:
cd /etc/csf
nano csf.pignore
Add these two lines:
exe:/usr/libexec/dovecot/anvil
exe:/usr/libexec/dovecot/auth
save and exit
restart csf and dovecot
*** NOTE: This is the Fix that others have been using.
More information can be found at
http://forums.cpanel.net/f43/emails-taking-long-time-since-11-40-upgrade-367621.html#post1497162
If you are still having issues please submit a support ticket and we can fix it for you.