3 ezmlm-limit \- Limits traffic to list
20 is intended to limit traffic to a list in case an outside
21 source sends excessive messages. Traffic is limited by converting the list
22 to a message moderated list, or by deferring messages.
27 If it does not exist or contains a time stamp more than
29 seconds old, it is updated.
30 If it exists, contains a time stamp less than
34 messages or more have passed since
42 this results in future messages being moderated.
48 will simply forward the message to
52 exists, messages will be queued for moderation. Thus, in case of error (such
53 as misconfigured auto responders) subscribers are spared
54 messages in excess of the limit. However, no messages are lost, since the
55 moderator(s) can (selectively) approve queued messages.
61 will not take any action.
63 Resetting the list requires manual
65 .IR dir\fB/modpost . Queued messages can be managed with regular moderation
66 or approved in bulk with
70 is not required for normal lists, since qmail and
71 ezmlm loop detection prevent problems caused by regular bounces. However,
72 it affords some protection against malice, and severely misconfigured
78 Defer excess traffic. Excess messages are deferred and qmail will re-deliver. As
79 a consequence, traffic will be throttled to the maximum allowed. Due to qmail
80 delivery back-off, messages may not be disseminated in the order received. If
81 traffic is continuously above or close to the limit, some messages may be
82 delayed for a long time or even bounced.
86 Make the list moderated once excess traffic is detected. This requires the
87 list to be configured up with
91 which is easiest done by first creating a message moderated list, then removing
97 messages (default 30).
104 as the time stamp. This allows the use of multiple instances of
106 for the same list. For instance, you may allow 60 messages per hour with one
107 instance and 150 messages per day with another. If
109 is relative, this is relative to
119 Check the number of messages within period of
121 seconds (default 3600 seconds).