That actually means "error occurred, mail server responded 5.1.1 not our customer?"

The recipients are in my address book and I need to send the same message to 15 members. What I do
do get the sent message?

The recipients are in my address book and I need to send the same message to 15 members. What I do
do get the sent message?

Tags: Thunderbird

Similar Questions

Maybe you are looking for