E-Rec Workflow - notification mail

Hi Experts,

We are using E-Rec workflows. When ever a user trying to apply for a job from portal, he will receive a mail that " .... please go through the following link to confirm your registration ..... <URL> ......."

my doubt is, from where this e-mail is generating.?

This e-mail is not generating in my Quality system but working fine in Prod. I have observed that RSCONN1 report is scheduled in background. Is this report sending that notification mails to the applicant ?

Thank You.

Regards,

Pavan.