Please see the full documentation of each keyword for platform availability.

Keywords not hyperlinked are obscure, undocumented z/VM-only settings.  If you are a z/VM site and need help with these settings, please contact L-Soft customer support.

If the "Introduced" column is blank, the keyword existed prior to LISTSERV 1.8d (13).

Keyword

Introduced

Abstract

TCPGUI_IPADDR


Defines the IP address used by the TCPGUI interface

TCPGUI_PORT


Defines the port number used by the TCPGUI interface

TCPGUI_PUBLIC_IP_ADDR

17.5

Sets the public (external) IP address for the LISTSERV web interface when running on a cloud service (e.g., Microsoft Azure) where the virtual machine's internal address is mapped to an external address.

TRAPIN


List  of userid@node  templates  from whom  LISTSERV should  never accept mail

TRAPOUT


List of userid@node  templates to whom LISTSERV should never send mail

TUNE_MANY_LISTS

14.3

(HPO only) Enables a suite of HPO functions that can markedly speed up operations on servers with many lists (>100).

UODBC_*

14.5

Three configuration variables prefixed by UODBC_* are available for use with DBMS/Mail Merge.

USE_LSMTP_MAIL_MERGE


Determines whether or not LISTSERV will use LSMTP's mail-merge functions for enhanced performance (requires LSMTP Classic version 1.1b or higher). OBSOLETE as of 14.5, see EMBEDDED_MAIL_MERGE instead.

VM30091


Indicates whether or not the VM30091 message suppression functions are available

VM_STYLE_INDEX

15.0

Boolean value determining the format of the response to the QUERY FILE command.

WA_USE_INSECURE_COOKIE

16.5

Boolean value determining whether LISTSERV favors login cookies containing plain-text passwords or not.  (Default is 0, i.e., "not").

WEB_BROWSER_CONFIRM

1.8c (12)

Indicates whether or not LISTSERV should require "OK" confirmation for commands sent from WWW browsers.

WWW_*_SITEKEY

17.5

A unique site key for one of the three supported CAPTCHA solutions:  Cloudflare Turnstile, hCaptcha, or Google reCAPTCHA.

WWW_ALLOW_LEGACY_INTERFACE

17.0

Determines whether the site, and by extension, individual lists, may continue to operate in legacy 16.5 "compatibility  mode"

WWW_ARCHIVE_CGI

1.8c (12)

The (preferably) relative URL that leads to the WWW archive CGI script. (This is a URL, not an OS path name.)

WWW_ARCHIVE_DIR

1.8c (12)

The full OS path name to the WWW archive directory

WWW_AUTHINFO_DISABLE

1.8d (13)

Disable/enable the web archive interface's IP address verification function

WWW_CAPTCHA_BADGE

17.5

A secret LISTSERV Captcha Badge to use alone, or with commercial CAPTCHA solutions

WWW_CAPTCHA_VENDOR

17.5

A string telling LISTSERV which CAPTCHA vendor is in use.

WWW_COOKIE_SAMESITE

17.5

Sets the SameSite attribute for LISTSERV login cookies

WWW_HSTS_MAX_AGE

16.5

Long integer value telling WA whether or not to output the "Strict-Transport-Security: max-age" http header.

WWW_ONETIME_PW_ROAMING

16.5

Boolean value which, when enabled, allows creation of "roaming" one-time passwords for the web interface which are not tied to IP addresses.

WWW_SHOW_SUBSCRIBER_COUNT

15.5

Disable/enable subscriber counts in the main web archive index page of the server.

XFERTO


Userid of the virtual machine to which files found in the lists readers should be transferred