Administering Mail and Messaging

Domain tables

sendmail uses a domain table for special routing, such as the following:

map a short host name to its fully qualified host name
map a domain into a source route starting with a host
obtain a transport address associated with a host

NOTE: RFC-822 discourages the explicit use of source routing within the Internet. SCO supports this opinion, and does not recommend generating source routes in the domain table unless absolutely necessary.