Changes to DaemonPortOptions Option (System Administration Guide: Resource Management and Network Services)

System Administration Guide: Resource Management and Network Services

Changes to `DaemonPortOptions` Option

The following tables describe the new features.

To declare this option, use one of the following syntaxes. In the example, pair refers to key=value. For formatting purposes, the example includes two pairs. However, you can apply one or more pairs.

O DaemonPortOptions=pair,pair              # for the configuration file
-ODaemonPortOptions=pair,pair              # for the command line
define(`confDAEMON_OPTIONS',`pair,pair')   # for m4 configuration

Note –

To avoid security risks, sendmail relinquishes its root permissions when you set this option from the command line.

If you need to build a new sendmail.cf file, refer to Building the sendmail.cf Configuration File (Task) in Chapter 25, Mail Services (Tasks).

The following table describes new and revised keys for the DaemonPortOptions option.

Table 27–5 New and Revised Keys for DaemonPortOptions


Key	Description
`Name`	A new key that specifies a user-definable name for `sendmail`. This key is used for error messages and for logging. The default is `MTA`.
`Modifier`	A new key that specifies values for `sendmail` that can be listed in a sequence without delimiters. For a list of values, see Table 27–6.
`Family`	Unless a `Family` is specified in a `DaemonPortOptions` option, `inet` is now the only default. If IPv6 users also want to listen on IPv6 interfaces, they can configure additional sockets into `sendmail.cf` by adding a `Family=inet6` setting to a `DaemonPortOptions` option.

The following table describes the values for the new Modifier key.

Table 27–6 Values for the New Modifier Key


Value	Description
`A`	Disables `AUTH` by overriding the `Modifier` value of `a`. Can be used with the `Modifier` key for `ClientPortOptions`. Refer to New `ClientPortOptions` Option.
`C`	Does not perform host-name canonification.
`E`	Disallows the `ETRN` command.
`O`	Ignores the socket if a failure should occur.
`S`	Turns off the use or the offer to use `STARTTLS` when email is being delivered or received. Can be used with the `Modifier` key for `ClientPortOptions`.
`a`	Requires authentication.
`b`	Binds to the interface that receives the mail.
`c`	Performs host-name canonification. Use this value only in configuration file declarations.
`f`	Requires fully qualified host names. Use this value only in configuration file declarations.
`h`	Uses the interface's name for the outgoing `HELO` command.
`u`	Allows unqualified addresses. Use this value only in configuration file declarations.