Dave Sigafoos:
Warning: require_once(Mail.php) ... UserMailer.php
[snip]
Any ideas about mail.php?
For info on $wgSMTP, see:
http://www.mediawiki.org/wiki/Manual:%24wgSMTP
As it says, you'll need to install the PEAR Mail package. You'll
probably need to install PEAR first, then use it to install Mail. It's
not too tricky, though. See:
http://pear.php.net/
The "documentation" tab will walk you through the process.
BTW, you can theoretically leave $wgSMTP unset to use the PHP built-in
mailer, which doesn't require this extension. However, with my Wiki
server on Windows, this didn't work for me, and I never found out why;
emails to certain types of address seemed to get sent but got lost later
in the Microsoft mail handling stuff in our servers. Switching to using
$wgSMTP fixed it for me.
Ian