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haraka-plugin-limit

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enforce various types of limits on remote MTAs

github.com/haraka/haraka-plugin-limit

haraka/haraka-plugin-limit

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; limits imposed on connection(s) tarpit_delay=3 ; REDIS CONFIG [redis] ; host=127.0.0.1 ; port=6387 database=4 ; ; CONNECTION CONCURRENCY LIMITS [concurrency] ; enabled=false max=3 [concurrency_history] ; History: when enabled, the plugin is one which stores IP history. The history ; plugin results must have a positive integers for good connections negative ; integers for poor / undesirable connections. Karma is one such plugin. ; enabled=false plugin=karma good=10 bad=1 none=2 ; RECIPIENT LIMITS [recipients] ; enabled=false ; max=20 ; max_relaying=100 [recipients_history] ; The same history notes for [concurrency] apply here. ; enabled=false plugin=karma bad=1 none=5 good=50 ; UNRECOGNIZED COMMAND LIMITS [unrecognized_commands] ; enabled=false max=10 ; ERRORS COMMAND LIMITS [errors] ; enabled=false max=10 ; CONNECTION RATE LIMITS [rate_conn] ; enabled=false ; Maximum number of connections from an IP or host over an interval 127=0 ; no interval defaults to 60s default=5 ; The history notes for [concurrency] apply here too. [rate_conn_history] ; enabled=false plugin=karma bad=1/15m none=1/5m good=15/1m ; RECIPIENT RATE LIMITS by HOST [rate_rcpt_host] ; enabled=false ; Maximum number of recipients from an IP or host over an interval 127=0 ; 50 RCPT To: maximum in 5 minutes default=50/5m ; RECIPIENT RATE LIMITS by Sender [rate_rcpt_sender] ; enabled=false ; Maximum number of recipients from a sender over an interval 127=0 default=50/5m ; RECIPIENT RATE LIMITS by Recipient [rate_rcpt] ; enabled=false ; Limit the rate of message attempts over a interval to a recipient 127=0 default=50/5m [rate_rcpt_null] ; enabled=false ; Limit the number of DSN/MDN messages by recipient default=1 [outbound] ; Limit outbound concurrency by destination domain name ; enabled=false ; example.com=10