I have 3 domains and in one domain i created a distribution list and added 12 users to it. I renamed one of the 12 mail id's say from email@example.com to firstname.lastname@example.org and from that time when i send mail to the DL i get bounce back mail that "Recipient address rejected" for email@example.com. At the same time i also get mail to firstname.lastname@example.org.
I tried to remove all the mail id's from this dl and added all again. I also removed the dl totally and then created again but still i face the same issue.
Can someone help me out to sort out this issue?