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Postfix: The Definitive Guide by Kyle D. Dent

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Name

maximal_backoff_time

Possible values:

time unit

Default:

4000s

Maximum time limit for Postfix to attempt redelivery of deferred messages. Each time a message is deferred, the queue manager increases the amount of time it waits to attempt delivery of that message again. The calculated increase of time is never allowed to exceed maximal_backoff_time .

Example:

maximal_backoff_time = 4000s

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