I cannot send email messages to a valid email address. I get an "undeliverable" message saying "the Internet community recognizes this as spam". Why can't I send to this valid email address?
Thanks for the reply. I am the only one sending to the address with a problem and it's only from my iMac, not from my iPad, which are not linked. It seems my iMac has somehow identified the address as spam, but I don't know how to find out if that is the case. The address is a valid email address.