NAME
dnsmx - prints the MX records of fqdn
SYNOPSIS
dnsmx fqdn
DESCRIPTION
If there are no MX records, dnsmx prints an artificial MX
record, simulating the behavior of MTAs.
SEE ALSO
dnsip(1),
dnsname(1),
dnsipq(1),
dnstxt(1),
dnsqr(1),
dnsq(1),
dnstrace(1)
http://cr.yp.to/djbdns.html