**** LMTP REDESIGN ****

RESULT:
- robust checking and handling of NNTP protocol errors
	- logging into a single file -> write(2) !fwrite(3)
- invoked as mailer using LMTP, providing useful return status
- invoked as command line (lowpri)
- queuing is not supported for command line and a client issue for LMTP
- remove To: and Cc: headers
- allow crosspostings only through command line
- new manpage
	- (optional) syslog
- command line choice for sending "exactly once" or "at least once" (default)

   **** SMTP ENGINE ****

[RFC821, 4.5.1. MINIMUM IMPLEMENTATION]
In order to make SMTP workable, the following minimum implementation is required for all receivers:
[RFC821, 4.1.2. COMMAND SYNTAX]

Verb Parameter                         Buffer
----+---------------------------------+-------------------
HELO <SP> <domain> <CRLF>
MAIL <SP> FROM:<reverse-path> <CRLF>   (char *)sender
RCPT <SP> TO:<forward-path> <CRLF>     (char **)recipients
DATA <CRLF>                            (char *)message
RSET <CRLF>
NOOP <CRLF>
QUIT <CRLF>


State Function Continue
-----+--------+-----------------
  0    wait()   LHLO > 1, MAIL > 2
  1    wait()   MAIL > 2
  2    wait()   RCPT > 3
  3    wait()   RCPT > 3, DATA > 4
  4    data()   >1

  x    wait()   RSET > 1
  x    wait()   NOOP > x
  x    wait()   QUIT > exit

readline() from pth test*
rfc822 header parsing from petidomo
string functions from http://www.engelschall.com/sw/str