[root@mail]# cat access
# Check the /usr/share/doc/sendmail/README.cf file for a description
# of the format of this file. (search for access_db in that file)

localhost.localdomain           RELAY
localhost                       RELAY
127.0.0.1                       RELAY
[snip]

##</code><code>##

[root@mail]# file access.db
access.db: Berkeley DB (Hash, version 7, native byte-order)

[root@mail]# strings access.db
RELAY
localhost.localdomain
RELAY
127.0.0.1
RELAY
localhost
[snip]
[root@mail]#