Contents of the /usr/lib Directory (System Administration Guide: Resource Management and Network Services)

System Administration Guide: Resource Management and Network Services

Contents of the `/usr/lib` Directory

Table 26-9 shows the contents of the /usr/lib directory, which is used for mail services.

Table 26-9 Contents of the /usr/lib Directory


Name	Type	Description
`mail.local`	File	Mailer that delivers mail to mailboxes.
`sendmail`	File	Routing program, also known as the mail transfer agent.
`smrsh`	File	Shell program (sendmail restricted shell) that uses the `"\|program"` syntax of `sendmail` to restrict programs that `sendmail` can run to those programs listed in the `/var/adm/sm.bin` directory. Refer to the smrsh(1M) man page for recommendations on what to include in `/var/adm/sm.bin`. To enable, include this `m4` command, FEATURE(`smrsh'), in your `mc` file.

Contents of the `/usr/lib/mail` Directory

Within the /usr/lib directory is a subdirectory, mail, that contains all of the necessary files to build a sendmail.cf file. The contents of mail are shown in Table 26-10.

Table 26-10 Contents of the /usr/lib/mail Directory Used for Mail Services


Name	Type	Description
`README`	File	Describes the configuration files.
`cf`	Directory	Provides site-dependent and site-independent descriptions of hosts.
`cf/main.mc`	File	Previously named `cf/main-v7sun.mc`. Is the main configuration file.
`cf/makefile`	File	Provides rules for building new configuration files.
`cf/submit.mc`	File	Is the configuration file for the mail submission program (MSP), which is used to submit messages.
`cf/subsidiary.mc`	File	Previously named `cf/subsidiary-v7sun.mc`. Is the configuration file for hosts that NFS-mount `/var/mail` from another host.
`domain`	Directory	Provides site-dependent subdomain descriptions.
`domain/generic.m4`	File	Is the generic domain file from Berkeley.
`domain/solaris-antispam.m4`	File	Is the domain file with changes that make `sendmail` function like previous Solaris versions. However, relaying is disabled completely, sender addresses with no host name are rejected, and unresolvable domains are rejected.
`domain/solaris-generic.m4`	File	Is the default domain file with changes that make `sendmail` function like previous Solaris versions.
`feature`	Directory	Contains definitions of specific features for particular hosts (see `README` for a full description of the features).
`m4`	Directory	Contains site-independent include files.
`mailer`	Directory	Contains definitions of mailers, which include `local`, `smtp`, and `uucp`.
`ostype`	Directory	Describes various operating system environments.
`ostype/solaris2.m4`	File	Defines default local mailer as `mail.local`.
`ostype/solaris2.ml.m4`	File	Defines default local mailer as `mail.local`.
`ostype/solaris2.pre5.m4`	File	Defines local mailer as `mail`.
`ostype/solaris8.m4`	File	Defines local mailer as `mail.local` (in LMTP mode), enables IPv6, specifies `/var/run` as the directory for the `sendmail.pid` file.
`sh`	Directory	Contains shell scripts that are used by the `m4` build process and migration aids.
`sh/check-permissions`	File	Checks permissions of `:include:` aliases and `.forward` files and their parent directory path for correct permissions.
`sh/check-hostname`	File	Verifies that `sendmail` is able to determine the fully qualified host name.

Contents of the /usr/lib Directory

Contents of the /usr/lib/mail Directory

Contents of the `/usr/lib` Directory

Contents of the `/usr/lib/mail` Directory