Last night cPanel upgraded the version of MySQL on one of our servers to the latest MySQL 5.5. Unfortunately this results in over 4000 emails from that server, crying that various websites couldn't connect to the MySQL database. The error found in /var/log/mysqld.log was
InnoDB: Error: log file ./ib_logfile0 is of different size 0 5242880 bytes
InnoDB: than specified in the .cnf file 0 26214400 bytes!
131218 23:06:21 [ERROR] Plugin 'InnoDB' init function returned error.
131218 23:06:21 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
131218 23:06:21 [ERROR] /usr/sbin/mysqld: unknown variable 'default-character-set=utf8'
131218 23:06:21 [ERROR] Aborting
If you happen to be using the "User Access Manager" in your WordPress install, and you are using Permalinks, then you will need this fix. Without it, the redirect for logged out users won't work, and they'll end up on a 404 page.
I've posted this how-to simply as a way to remember how I did this. For all those that want to use Majordomo mailing list app on a cPanel box, while running Exim, here is no frills tutorial. I've used this on several boxes over the last five years without issue. The setup allows you to manage individual lists by domain. Each of your accounts can have their own majordomo lists. There is no control panel for this setup, and all the editing takes place on the commend line. Hope someone finds it useful.