Sendmail, 3rd Edition

Name

UserDatabaseSpec

Synopsis

V8 sendmail, if compiled with USERDB defined (USERDB), can use a special, internally understood database called the User Database. Addresses that are defined in the User Database can be looked up and modified after aliasing but before the processing of the user’s ~/.forward file.

The workings of this database are described in userdb. The UserDatabaseSpec option defines the name and location of the file containing this User Database information.

The forms of the UserDatabaseSpec option are as follows:

O UserDatabaseSpec=path,...          ← configuration file (V8.7 and later) 
-OUserDatabaseSpec=path,...          ← command line (V8.7 and later) 
define(`confUSERDB_SPEC',``path,...'')   ← mc configuration (V8.7 and later) 
OUpath,...                           ← configuration file (deprecated) 
-oUpath,...← command line (deprecated) 

The argument path, . . . is of type string and is a comma-^[75] or space-separated list of elements. Those elements can be database pathnames, or other information as described next. If path, . . . is missing or if the entire option is missing, the User Database is not used. Otherwise, the User Database is used, and each database is accessed in turn, leftmost to rightmost, in the list of paths. There is no default for the mc technique.

The elements of path, . . . can either be pathnames of files or other methods of lookup, depending on the first character of each:

/

A lead slash causes the element to be interpreted as a pathname; for example, /etc/mail/userdb.

@

A leading ...