TOPIC: Problem with email confirmation

Hello.
We use on our service DTRegister but when someone try to confirm his presence on the meeting then he get [email protected] .

We use on our service of Joomla "SMTP Server" to send emails instead of "PHP Mail Function". We couldn't change it because we use mission critical component which work's without problems only with this settings. We discovered that if we change settings to "PHP Mail Function" it's working alright.

Can we do something to force DTRegister to work with SMTP Server instead PHP Mailer?
Regards. Paul