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


       fdnsmxalist [-x] <hostname>


       fdnsmxalist will attempt to look up a list of MX records for  hostname.
       If  any  are  found,  they  are printed to standard output seperated 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


       Ian Gulliver <>



                                  2004-02-12                    fdnsmxalist(1)