I've updated my Joomla mail setting to use a SMTP mailer and it appears that Matukio doesn't like it. I've installed the latest version of Matukio 5.2.7 and got the SMTP connect() failed error message after I booked a participant. Emails are not being received after a booking, also. Is there a setting in Matukio I can use to change Matukio's mail system to allow the SMTP mailer? Peggy