09/28/2007: Version 1.1.9
        Tweaked header field matching
          Thanks to Michael Bazarelli for the bug report
        Added a custom From: name
          Thanks to Chikondi Banda for the feature request

12/18/2005: Version 1.1.8
        Added a Vacation tag to From: addresses
        Added a routine to properly generate date headers (long overdue!)
          Thanks to Milivoj Ivkovic for the example
        Added a flag to only respond to specified senders
          Thanks to Jeff Chan for the feature request
        Improved parsing of From: addresses
          Thanks to Mark Haidl
        Added $RECIPIENT and $SENDER tokens
          Thanks to Wayne Fathers for the feature request
        
11/23/2003: Version 1.1.7
        Added a check for spam tags in the subject line (ignore messages)
        Added a check for known spam flag headers (ignore messages)
          Thanks to George 'Chip' Smith
        Now exhaust the input buffer after reading the message header
          Thanks to Christer Borang
        Fixed silence interval argument interpretation
        Now ignore case for matching recipients
          Thanks to Ismael Ballo

01/08/2003: Version 1.1.6
        Rewrote help as POD (about time!)
        Fixed a special case recipient matching condition
          Thanks to Patrik Kullman
        Fixed a silly typo when setting syslog socket type
        Increased specificity for matching a user's own messages
          Thanks to Steve Watt for both
        Minor code clean-up

02/25/2002: Version 1.1.5
        Automatic mode now inherits custom command line arguments
        from the interactive mode
          Thanks to Iman Ridwan

12/18/2001: Version 1.1.4
        Adjusted error reporting to a user's individual log
        Added an option to overwrite syslog socket type
        Added a work-around for misconfigured libnet (Net::SMTP)
          Thanks to Tony Schmitz

07/20/2000: Version 1.1.3
        Changed syslog access to default rather than forcing 'unix'

04/28/2000: Version 1.1.2
        Improved recipient and alias checks
        Changed previous sender check to track by Reply-To:
        Fixed lax matching of ignored senders against the entire From:
          Thanks to Andrea Rizzoli

01/11/2000: Version 1.1.0
        Replaced dbmopen() calls with direct SDBM_File ties
          AnyDBM_File and dbmopen() were simply not portable enough
          Thanks to Raymond

11/02/1999: Version 1.0.4
        Added debugging code to detect failed mailer allocations
          Thanks to Mark Demm
        Added command line options to specify an alternate mail server
        and an alternate sender address
          Thanks to Eric I. Holtzman
        Added support for the Reply-To: header
          (Doh! Can't believe I missed this in the original.)
        
09/03/1999: Version 1.0.3
        Cleaned up code syntax for better Perl5 compliance
          Thanks to Joel Carlson

08/26/1999: Version 1.0.2
        Fixed a typo which affected the "-j" flag functionality
          Thanks to Nicholas J. Dear
        Now force permissions on the created .forward file
          in order to accommodate sendmail security checks

08/20/1999: Version 1.0.1
        Always add domain to response mail from envelope;
          no longer count on the MTA to do this for us.
          Thanks to Nicholas J. Dear