sendmail, 4th Edition

FEATURE(authinfo)

Use a separate database for authentication information V8.12 and later

Beginning with V8.12, FEATURE(authinfo) tells sendmail to look in a special database file called authinfo for authentication information, rather than in the access database. This means you can have more secure permissions for the authinfo database than for the access database. FEATURE(authinfo) is declared like this:

FEATURE(`authinfo')

This creates a default configuration declaration that looks like this:

Kauthinfo hash /etc/mail/authinfo

Here the hash is derived from the setting of the DATABASE_MAP_TYPE mc configuration macro (Set a Default Database-Map Type for Features on page 897) and the /etc/mail is derived from the setting of the MAIL_SETTINGS_DIR mc macro (The MAIL_SETTINGS_DIR mc Macro on page 68). If you wish to change the defaults without having to change these two mc configuration macros, you can simply define that new default by adding a second argument to the feature declaration:

FEATURE(`authinfo', `hash /etc/private/authinfo')

If you provide a second argument and the second argument is a literal LDAP:

FEATURE(`authinfo', `LDAP')

the default becomes the following (we have wrapped the lines to fit the page):

Kauthinfo ldap −1 -v sendmailMTAMapValue -k (&(objectClass=sendmailMTAMapObject)
(|(sendmailMTACluster=${sendmailMTACluster})(sendmailMTAHost=$j))
(sendmailMTAMapName=authinfo)(sendmailMTAKey=%0))

See ldap (was ldapx) on page 912 for a description of the ldap database type and its