FILTER-ADMDSCRUB(8)

NAME
filter-admdscrub - Administrative Management Domain scrubber

SYNOPSIS
filter-admdscrub [-rv] [authserv-id]

DESCRIPTION
filter-admdscrub checks mail for ‘Authentication-Results’ headers in the requested authserv-id domain and removes them. This filter is intended to be used as the first filter at a border MTA. This should prevent utilization of these headers in further filters or MTAs when they don't originate from within it's own trusted domain. The -r flag can be set to reject mails containing these headers. If authserv-id is not specified it defaults to opensmtpd's admd option. For more verbose logging the -v flag can be used.

SEE ALSO
smtpd.conf(5)

STANDARDS
M. Kucherawy, May 2019, RFC 8601, Message Header Field for Indicating Message Authentication Status.