Additional Directories and Files Used for Mail Services
The following table shows the directories and files associated with mail services that have not previously been discussed.
Table 3  Additional Directories and Files Used for Mail Services
| 
|  |  |  |  
| /etc/default/sendmail  | File | Lists the environment variables for the startup script for sendmail. |  
| /etc/shells | File | Lists the valid login shells. |  
| /etc/mail/cf/sh | Directory | Contains shell scripts that are used by the m4 build process and migration aids. |  
| 
/system/volatile/sendmail.pid | File | Lists the PID of the listening daemon. |  
| 
/usr/sbin/check-permissions | File | Checks the permissions of the :include: aliases, .forward files, and their parent directory path for correct permissions. |  
|  | File | Verifies that sendmail is able to determine the fully qualified host name. |  
|  | File | Queries and edits single records in database maps for sendmail. |  
|  | File | Mail notification daemon. |  
|  | File | Builds binary forms of keyed maps. |  
|  | Symbolic Link | A symbolic link to /usr/lib/sendmail. Used to create the binary form of the alias database. Previously in /usr/bin. |  
|  | File | Error message logger used by sendmail. |  
|  | File | Perl script that starts the client-side remote mail queue. |  
| /var/mail/mailbox2 | File | Mailboxes for delivered mail. |  
|  | Directory | Storage for mail that is delivered by the client daemon. |  
|  | Directory | Storage for mail that is delivered by the master daemon. |  |