DKIM_SIGN

DKIM_SIGN_ALL

Platforms

All

Abstract

A Boolean value which tells LISTSERV whether or not to sign all messages for which it has a suitable DKIM private key. SEE DETAILS.

Example

z/VM:

DKIM_SIGN_ALL = 1

Unix:

DKIM_SIGN_ALL=1

export DKIM_SIGN_ALL

Windows:

DKIM_SIGN_ALL=1

Details

LISTSERV supports DKIM (DomainKeys Identified Mail) (see http://www.dkim.org/ for details).

Your LISTSERV Classic or Classic HPO installation must have current maintenance in order to enable this support.

Additionally, LISTSERV HPO for Windows, and Linux incorporates a DKIM Accelerator for faster signing of messages. The accelerator is part of HPO and cannot be disabled without disabling HPO.

By default (DKIM_SIGN_ALL=0), LISTSERV does not sign any messages using DKIM other than those for which DKIM signing is expicitly requested by the caller, for instance, DISTRIBUTE jobs with an explicit "DKIM=YES" parameter in the JOB card. List mail and non-list administrative messages will not be signed when DKIM_SIGN_ALL is left at the default value.

However, because of its relationship to the DMARC protocol, you will probably want to have LISTSERV sign every message that it generates, regardless of its source. Setting DKIM_SIGN_ALL=1 in the site configuration file tells LISTSERV to try to sign every message for which it has a suitable private key, as defined in the DKIM_SIGN configuration parameter.

Important: Please review Using LISTSERV with DomainKeys before enabling this feature. DKIM support MUST be configured in LISTSERV before setting DKIM_SIGN_ALL=1 or message signing will fail.

Default Value