fully conformant to rfc977. In addition the commands XOVER and
AUTHINFO are implemented.
Author: Ulrich Pfeifer <pfeifer@ls6.informatik.uni-dortmund.de>
WWW: http://search.cpan.org/dist/NNML/
PR: ports/100277
Submitted by: Gea-Suan Lin <gslin at gslin.org>