NAME
    What - Find out about running services

SYNOPSIS
      $what = What->new( 
                 Host => my.domain.org, 
                 Port => 28, 
              );  

      $what->mta;
      $what->mta_version;
      $what->mta_banner;

DESCRIPTION
    The What class is interface to classes providing information about
    running services. What::MTA is the only implementation so far.

What::MTA
    MTA's supported are: Exim, Postfix (version only on localhost),
    Sendmail, Courier (name only), XMail, MasqMail.

    See What::MTA for details.

  METHODS
    new
          $obj = What->new( Host => "10.10.10.1", Port => 25 )

    mta()
        Returns the name of the MTA running.

    mta_banner()
        Returns the banner message.

    mta_version()
        Returns the MTA version.

AUTHOR
    Toni Prug <toni@irational.org>

COPYRIGHT
    Copyright (c) 2006. Toni Prug. All rights reserved.

    This program is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
    Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.

    This program is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
    Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

    See <http://www.gnu.org/licenses/gpl.html>