I'm updating your powermessenger from PEAR to the new phpMailer library that has more debugging and we already tested and have working on your site.
I think I made the changes, but when I went to test it appears my FTP access has been blocked.
Can you give me access to the control panel so I can upload and test my updates that way?
I updated the files:
forward.php
users_emailpw.php
users_profile.php
admin_pm/users_registration.php
admin_pm/common/mailings.php
admin_pm/common/send_preview.php
webassist/plugins/registration/registration.php
webassist/plugins/registrations/themed/registration.php
webassist/plugins/registration/full/registration.php
Please download them so you don't accidentally overwrite them later.