when i try telnet to server i get the usual first bit type helo or ehlo domain name then any attempt at mail from:email@example.com comes back with
501 syntax errror in parameteers or arguments
checked all the main black lists
reverse lookup etc no problmes
anyone have ideas as to why cant find a mail address to ask yahoo what they block on does anyone know?
our isp uses cname in there back up server which coud be possible cause.