Xobor.com - official support forum

Hi,
I have had reports from new members trying to join my forum, that a confirmation e.mail is not being sent to them after they have registered. I tested this last night at 8pm and have tested it again this morning. No emails were sent to my test registrations. I then changed the way in which activation should be done and saved that and logged out. Went back in and changed it beck to my preferred way (New members are activated automatically upon visiting the link sent in the activation e-mail)
but still no emails are being sent out.
Can you help please
Regards
Jim
http://538451.xobor.com/