TRAPIN

Platforms

All

Abstract

A space-separated list of Internet addresses from which LISTSERV should never accept administrative mail.

Example

z/VM:

TRAPIN = 'OBNOX@SOMENODE.NET *@BADNODE.COM'

Unix:

TRAPIN="OBNOX@SOMENODE.NET *@BADNODE.COM"

export TRAPIN

Windows:

TRAPIN=OBNOX@SOMENODE.NET *@BADNODE.COM

Details

A space-separated list of Internet addresses from which LISTSERV should never accept mail. Mail and files from users matching these templates will not be processed, but rather simply transferred to the LISTSERV maintainer. This parameter is provided primarily for z/VM sites, but is available for the convenience of z/VM customers migrating to other platforms and should not need to be set by typical non-z/VM installations.

Note: L-Soft does not recommend using this keyword to filter out problem users, as it does not prevent people at the hosts in question from posting to mailing lists. It controls only how incoming administrative mail (e.g., containing LISTSERV commands) sent to the LISTSERV address is treated. You should use the FILTER_ALSO keyword to filter problem users.

In LISTSERV 16.5 and following, the contents of TRAPIN are evaluated during any call to the X-CONFIRM message generator, as one of two improvements added to help prevent spammers from generating "backscatter" messages by using the anonymous list subscription form in LISTSERV's web interface.

(A second, related improvement in 16.5 and following is to summarily reject any anonymous subscription request where the Name: field contains a URL (or more specifically, the string "://"). We mention this only in passing as it otherwise has nothing to do with the change noted above to TRAPIN.)

Default Value

Built in, not documented; additions to TRAPIN are additive to the built-in filter.

Wildcards

Allowed.