Name
FEATURE(rbl)
Synopsis
The
rbl feature was introduced in V8.10 as an aid to
blocking spam email. But because it directly looked up hosts at
rbl.maps.vix.com, it was soon rendered obsolete.
V8.11 sendmail replaced this
rbl feature with the dnsbl
feature (Section 7.2), which allows you to specify
the host to use for lookups. V8.12 sendmail
extended that ability further with the enhdnsbl
feature (Section 7.2.2), which also allows you to
customize error messages and determine what to do with temporary
failures.
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