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Postfix: The Definitive Guide by Kyle D. Dent

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Name

fast_flush_refresh_time

Possible values:

time unit

Default:

12h

The fast flush service allows the queue manager to retry immediate delivery of messages for a particular domain upon request. The fast_flush_refresh_time parameter specifies a time interval for automatically flushing messages that have not otherwise had redelivery requested.

Example:

fast_flush_refresh_time = 12h

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