I set up a small group for a club a while ago, and have been sending invitations to remaining members of the club.
One invitation shows Status "Failed - 5.1.2".
What does this mean?
I had a couple of failures (due to typing errors) which were obvious and easily fixed, but this puzzles me.
The email address is correct (from my Address Book) - I assume some kind of delivery error, but it is to bigpond.com - Australia's largest telco.
