whenever I send group email from my contacts book a non existing address bounces back undeliverable. Impossible to find such email address anywhere on my computer.
iMac 21.5″, macOS 10.15
One way you can get a bounce back from an address not in your group list is for one of your direct addressees to have set up forwarding to an address that is (or has become) invalid.
It will take a while to go through my list to find the addressee responsible but thanks for guidance. I'll let you know if and when I'm able to clear the problem.
whenever I send group email from my contacts book a non existing address bounces back undeliverable
