When you say *I* do you mean your personal account (completely independent f anything else) or the postmaster forwarder?
in any case, you may have used the sxaa tool in the past to add an alias pointing to your account (600 flag). Check all groups from sac to be sure you're not in one of them. Although less likely, check the /etc/aliases file to see if you are not in there somewhere.
yes, is my personal account (completely independent).. the mail is not sending under a group..the content of the notification mail is only like the following, no other information.