NAME

       fdnsmxalist - resolve a list of MX records and their corresponding A records for hostname

SYNOPSIS

       fdnsmxalist [-x] <hostname>

DESCRIPTION

       fdnsmxalist  will attempt to look up a list of MX records for hostname.  If any are found,
       they are printed to standard output separated by newlines in the format:

        Protocol (Priority) hostname:port

       The program then looks up lists of A and AAAA records for each MX record, and prints  them
       to  standard  output, one IP per line.  Lines are printed to standard output starting with
       "ERROR: " if any MX records have no corresponding A or AAAA records, are  CNAMEs  (an  RFC
       violation), or have A or AAAA records which point to non-routable IP addresses.

       If  the  -x switch is passed on the command line, the program outputs machine-parsable XML
       instead of the human-readable tree.

       Exit codes for the program are:

         0 - Everything looks fine
         1 - An MX has a non-routable IP
         2 - An MX doesn't exist
         3 - An MX is a CNAME
         4 - An MX is an IP address
       100 - Invalid syntax
       103 - DNS timeout or host does not have MX records

AUTHOR

       Ian Gulliver <ian@penguinhosting.net>

SEE ALSO

       libfiredns(3)

                                            2004-02-12                             fdnsmxalist(1)