Name service can be used to route mail over TCP/IP (SMTP) if you have TCP/IP installed and configured. See ``Selecting name server lookup method''.
MMDF can use these name server resource records: A, CNAME, MB, MR, MG, and MX. See ``Mail-related name server resource records''.
Use MX resource records by defining a channel that uses a table that is configured to query a name server. See ``Table Data'' in ``Modifying MMDF table parameters''.
Use A and CNAME resource records by including a domain that uses a table that is configured to do subdomain lookups. See ``Lookup Options'' in ``Modifying MMDF table parameters''. Usually the root domain is used for this purpose.
Use MB, MR, and MG resource records by including an ALIAS declaration in the /usr/mmdf/mmdftailor file. For example:
MTBL name=nsalias, flags=ns, show="DNS MR, MB records. flags=alias ALIAS table=nsalias
The program host(ADMN) may be used to exercise the interface routines to the name server that are used by MMDF.