Is there a limit on the number of addresses in a group? Or does it depend on the ISP? Or does it matter if you're sending an HTML? I keep trying to send an HTML message to 102 recepients and have gotten two types of error messages: 1) Addressee not recognized; 2) Too many addresses. I got the second message after purging the unknown names. I regullarly send pdf-attached emails to a list of 73 names. What gives?