We have been getting this error for one email group (about 20 people) using Outlook 2011 for Mac. The problem is that it keeps sending the message to the group many times (20+ times). They are not happy. Have not had the problem sending email to persons
outside of this group.
I am having the same issue and the group I’m sending to is 18 people. I’m not happy that they’re getting multiple copies of my email. This has not happened before. I tried deleting all emails to and from this group but the repeat send keeps happening. Any ideas how I can resolve this?