I manage an email group for a society I belong to. Routinely send out group emails: no problem. Suddenly, emails won't send and I get error message saying "invalid addresses" - but does not identify which emails. I have checked my list again and again: all addresses seem ok. Somebody has suggested I've exceeded a group limit . There are 57 members - is there a limit on group emails?
I have a btinternet address and a webmail BT email. Thanks for your help.