Thank you for registering

Dolphin is randomly sending out "Thank you for registering emails." I recently had some site rebranding done on the backend and mobile apps.  Has anyone ever experienced a problem like this? I have a site with a few test members, so I can't understand where the emails are generated from.  Help needed. The cron job is processing videos, but registration emails are blocked by my yahoo account.  I assume that's because it looks like spam. By the way I have vps server.

Thanks

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I figured this out, my site is getting lots of fake users.  These are the spammers I need to block

I thought that might be it.. Sometimes the server will keep trying to deliver the welcome email to those fake address.

Deano's new email captcha module would is perfect for stopping registration attempts using fake email addresses.

http://www.boonex.com/m/email-captcha

I installed email captcha and all spam stopped. great module