Wow! Fantastic! I tried out inserting the code, and it worked instantly! I've been hunting these forums for an answer.. and finally got something. Hopefully you guys put this in the next build.
Joomla! 1.5.15
Community Builder 1.2.1
PHP 5.2.10
Host Server: Different from SMTP server
SMTP Settings:
E-Mail used: Google Apps account.
E-Mails match CB registration Address
J! Mass E-Mail test: Pass
J! System Allow User Registration: No
CB Registration Allow user Registration: Yes
SEF URL Settings: On and Off both work
Thanks a lot! I've spent like 8 hours trying to figure out why I couldn't get new users to receive a confirmation e-mail.. now I can keep the ball rolling after I did a fresh install.