Postmaster (UNIX)

Module: System Mail

This check examines the mail aliases file to verify that the postmaster alias is set to a valid user to send critical sendmail messages. The UNIX default alias is root.

The following table lists the error messages for the check.

Table: Error messages for Postmaster

Message String ID and Category	Platform and Message Numeric ID	Message Title and Description	Additional Information
String ID: STKU_CFNOEXIST Category: System Information	UNIX (6041)	Title: Sendmail configuration file missing Description:The sendmail configuration file was not found on the system.	Severity: green-0 Correctable: false Snapshot Updatable: false Template Updatable: false Information Field Format: [%s]
String ID: STKU_ALIASNOEXIST Category: System Information	UNIX (6042)	Title: Mail alias file missing or not a regular file Description:The sendmail alias file is missing or is not a regular file. Because the alias file could not be read, the Postmaster check assumes that there are no aliases defined. The alias file defines aliases for replacing one mail recipient address with another. The name of the alias file is specified by the AliasFile option (option A) in the sendmail.cf file and is listed in the name field. Either remove the AliasFile option from sendmail.cf or create a valid alias file.	Severity: yellow-2 Correctable: false Snapshot Updatable: false Template Updatable: false Information Field Format: [%s]
String ID: STKU_POSTMASTERNOTFOUND Category: System Information	UNIX (6043)	Title: Postmaster does not resolve to a valid user account Description:RFC 822 requires every site that is running sendmail to accept for delivery mail that is addressed to "postmaster". On this system, there is no user named postmaster and there is no alias for postmaster that resolves to a valid user account. Mail sent to postmaster on this system may be returned to the sender as undeliverable. In your mail aliases file, define at least one alias for postmaster that is a valid user.	Severity: yellow-1 Correctable: false Snapshot Updatable: false Template Updatable: false Information Field Format: [Postmaster alias: %s]

Message String ID and Category

Platform and Message Numeric ID

Message Title and Description

Additional Information

String ID: STKU_CFNOEXIST

Category: System Information

UNIX (6041)

Title: Sendmail configuration file missing

Description:The sendmail configuration file was not found on the system.

Severity: green-0

Correctable: false

Snapshot Updatable: false

Template Updatable: false

Information Field Format: [%s]

String ID: STKU_ALIASNOEXIST

Category: System Information

UNIX (6042)

Title: Mail alias file missing or not a regular file

Description:The sendmail alias file is missing or is not a regular file. Because the alias file could not be read, the Postmaster check assumes that there are no aliases defined. The alias file defines aliases for replacing one mail recipient address with another. The name of the alias file is specified by the AliasFile option (option A) in the sendmail.cf file and is listed in the name field. Either remove the AliasFile option from sendmail.cf or create a valid alias file.

Severity: yellow-2

Correctable: false

Snapshot Updatable: false

Template Updatable: false

Information Field Format: [%s]

String ID: STKU_POSTMASTERNOTFOUND

Category: System Information

UNIX (6043)

Title: Postmaster does not resolve to a valid user account

Description:RFC 822 requires every site that is running sendmail to accept for delivery mail that is addressed to "postmaster". On this system, there is no user named postmaster and there is no alias for postmaster that resolves to a valid user account. Mail sent to postmaster on this system may be returned to the sender as undeliverable. In your mail aliases file, define at least one alias for postmaster that is a valid user.

Severity: yellow-1

Correctable: false

Snapshot Updatable: false

Template Updatable: false

Information Field Format: [Postmaster alias: %s]