# DO NOT EDIT THIS FILE. EDIT THE MAIN.CF FILE INSTEAD. THE STUFF # HERE JUST SERVES AS AN EXAMPLE. # # This file contains example settings of Postfix parameters that # control delivery rates. # The default_destination_concurrency_limit parameter specifies a # default limit on the number of parallel deliveries to the same # destination. This is the default limit for delivery via SMTP, via # the local delivery agent and via the pipe mailer. # default_destination_concurrency_limit = 20 # The default_destination_recipient_limit parameter specifies a # default limit on the number of recipients per message delivery. # This is the default limit for delivery via SMTP, via the local # delivery agent and via the pipe mailer. # default_destination_recipient_limit = 50 # The initial_destination_concurrency parameter specifies the initial # per-destination concurrency level for parallel delivery to the same # destination. This limit applies to delivery via SMTP, via the local # delivery agent and via the pipe mailer. # # With concurrency of 1, one bad message is enough to block all mail # to a site. A concurrency of 2 seems a reasonable choice. # initial_destination_concurrency = 2 # The maximal_backoff_time parameter specifies the maximal time # between attempts to deliver a deferred message. # # Time units: s (seconds), m (minutes), h (hours), d (days), w (weeks). # The default time unit is s (seconds). # maximal_backoff_time = 4000s # The maximal_queue_lifetime parameter specifies the maximal time # a message is queued before it is sent back as undeliverable. # # Time units: s (seconds), m (minutes), h (hours), d (days), w (weeks). # The default time unit is d (days). # # Specify 0 when mail delivery should be tried only once. # maximal_queue_lifetime = 5d # The minimal_backoff_time parameter specifies the minimal time # between attempts to deliver a deferred message. This parameter # also limits the time an unreachable destination is kept in the # short-term, in-memory, destination status cache. # # Time units: s (seconds), m (minutes), h (hours), d (days), w (weeks). # The default time unit is s (seconds). # minimal_backoff_time = 1000s # The queue_run_delay parameter specifies the time between deferred # queue scans by the queue manager. # # Time units: s (seconds), m (minutes), h (hours), d (days), w (weeks). # The default time unit is s (seconds). # queue_run_delay = 1000s # The defer_transports parameter specifies the names of transports # that should not be delivered to unless someone issues "sendmail # -q" or equivalent. Specify zero or more names of mail delivery # transports names that appear in the first field of master.cf). # #defer_transports = smtp #defer_transports =