Some SMTP (such as Windows IIS Virtual) mail servers
require that the end of message be terminated with a
\r\n.\r\n not just a \n.\n.
YaBB waits for a response from the mail server after
submitting a Print MAIL "\n.\n" in subs.pl sub sendmail
however the response never comes because the mail
server requires \r\n.\r\n. Also headers can get mixed in
with the data since Subject is only terminated with a
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