antirbl(8)
NAME
antirbl - disable RBL tests for listed sites
SYNTAX
antirbl domain program [ arg ... ]
DESCRIPTION
antirbl sets the $RBLSMTPD environment variable to the
empty string if (1) $RBLSMTPD is not already set, (2) the
$TCPREMOTEIP environment variable shows an IP address
a.b.c.d, and (3) there is an address for the host
d.c.b.a.domain.
antirbl then runs program with the given arguments. Nor
mally program is rblsmtpd, which checks the $RBLSMTPD
environment variable to decide whether to block incoming
mail.
Note that antirbl does not set $RBLSMTPD if it encounters
a temporary error looking up d.c.b.a.domain. If you want
to guarantee service during DNS failures, use tcpserver to
set the $RBLSMTPD environment variable for preauthorized
addresses.