INN commit: trunk/doc/pod (inn.conf.pod)
rra at isc.org
Tue Jan 26 20:26:56 UTC 2010
Date: Tuesday, January 26, 2010 @ 12:26:56
Clarify how posting backoff is activated.
Thanks to Manuel P?\195?\169gouri?\195?\169-Gonnard for the report.
inn.conf.pod | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
--- inn.conf.pod 2010-01-26 20:25:39 UTC (rev 8934)
+++ inn.conf.pod 2010-01-26 20:26:56 UTC (rev 8935)
@@ -944,14 +944,14 @@
nnrpd(8) has support for controlling high-volume posters via an
exponential backoff algorithm, as configured by the following parameters.
-Exponential posting backoff works as follows: News clients are indexed by
-IP address (or username, see I<backoffauth> below). Each time a post is
-received from an IP address, the time of posting is stored (along with the
-previous sleep time, see below). After a configurable number of posts in
-a configurable period of time, nnrpd(8) will activate posting backoff and
-begin to sleep for increasing periods of time before actually posting
-anything. Posts will still be accepted, but at an increasingly reduced
+Exponential posting backoff works as follows: news clients are indexed
+by IP address (or username, see I<backoffauth> below). Each time a post
+is received from an IP address, the time of posting is stored (along
+with the previous sleep time, see below). After a configurable number
+of posts in a configurable period of time, nnrpd(8) will begin to sleep
+for increasing periods of time before actually posting anything (posting
+backoff is therefore activated). Posts will still be accepted, but at an
+increasingly reduced rate.
After backoff has been activated, the length of time to sleep is computed
based on the difference in time between the last posting and the current
@@ -961,6 +961,8 @@
I<backoffpostfast>, then the new sleep time will equal the previous sleep
time. If this difference is greater than I<backoffpostslow>, the new
sleep time is zero and posting backoff is deactivated for this poster.
+(Note that this does not mean posting backoff cannot be reactivated later
+in the session.)
Exponential posting backoff will not be enabled unless I<backoffdb> is set
and I<backoffpostfast> and I<backoffpostslow> are set to something other
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