mark martinec xjukpdhxtcwlclorxjugvcceaschallengecc charles use instead many sites accept saying wont relay message recipient specified like words someone risk losing mail rejected dumb relay server somewhere use experience problems relaying receiving messages sender address come across two three sites wanted enter email address web form address accepted valid pretty much independent problem preclude regular use plussed addesses mark wed 06 aug 2008 221224 0100 different delimiters relay_recipient_maps