I clicked the link, none of hte groups I am subscribed to show a B in any colour.?
They won't, now that you've unbounced. ?
The email address I have in the groups is correct.?
There are current discussions about Yahoo Mail sometimes rejecting messages saying "554 delivery error: dd This user doesn't have a account" when in fact the address is correct and has been working; and works again later. So something seems to be glitching in their systems.