General-Purpose Mail Filter
The following function is available only in the ‘eom’ handler:
Notify the MTA that the filter is still processing the message. This causes MTA to restart its timeouts and allows additional amount of time for execution of ‘eom’.
Use this function if your ‘eom’ handler needs additional time for processing the message (e.g. for scanning a very big MIME message). You may call it several times, if the need be, although such usage is not recommended.
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