\begin{thebibliography}{CCI88}

\bibitem[CCI88]{CCITT.MHS}
{Message Handling: System and Service Overview}.
\newblock International Telegraph and Telephone Consultative Committee, 1988.
\newblock Recommendation X.400.

\bibitem[Cro82]{RFC822}
David~H. Crocker.
\newblock {Standard for the Format of ARPA Internet Text Messages}.
\newblock Request for Comments 822, DDN Network Information Center, SRI
  International, August 1982.

\bibitem[III84]{MMDFII}
Douglas P.~Kingston III.
\newblock {MMDFII: A Technical Review}.
\newblock In {\em Proceedings, Summer Usenix Conference and Exhibition}, pages
  32--41, June 1984.
\newblock Salt Lake City, Utah.

\bibitem[Kil88]{PP.MTA}
Stephen~E. Kille.
\newblock {PP~---~A Message Transfer Agent}.
\newblock In Einar Stefferud, editor, {\em {Proceedings, Fourth International
  Symposium on Computer Message Systems}}, pages 115--128, September 1988.
\newblock Costa Mesa, California.

\bibitem[Pos82]{SMTP}
Jon~B. Postel.
\newblock {Simple Mail Transfer Protocol}.
\newblock Request for Comments 821, DDN Network Information Center, SRI
  International, August 1982.
\newblock See also \milstd/ 1781.

\bibitem[Ros90]{ISODE}
Marshall~T. Rose.
\newblock {\em {The ISO Development Environment: User's Manual}}, 6.0 edition,
  January 1990.

\end{thebibliography}
