Subject: | bare line feeds in headers not fixed |
Line endings in the body of the email are normalized to CRLF, but not
in the headers.
If you send an email with multi-line headers and the line endings
happen to not be CRLF, some servers like Qmail will reject the mail.
Until this is fixed in a future version, make sure you use CRLF ("\015
\012") as your line endings in headers.