The 'trick' is to know that most internet protocols require lines to be separated by CRLF. According to RFC 2822 (Internet Message Format): 
Messages are divided into lines of characters.  A line is a series of 
+characters that is delimited with the two characters carriage-return 
+and line-feed; that is, the carriage return (CR) character (ASCII val
+ue 13) followed immediately by the line feed (LF) character (ASCII va
+lue 10).  (The carriage-return/line-feed pair is usually written in t
+his document as "CRLF".)

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CRLF is \015\012, note that \n cannot be relied on to always be a newline.

C.

In reply to Re: e-mail with newlines by castaway
in thread e-mail with newlines by lpoht

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