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How to change the block period for Greylisting ( ONLY)

Answer

Per default the initial block period for Greylisting (the time the same triplet will be blocked) is 15 min. To change the block period, the following registry key with the required value needs to be created.
 
  • for 32bit operating system: HKEY_LOCAL_MACHINE\SOFTWARE\GFI\ME15\Greylisting 
  • for 64bit operating system: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GFI\ME15\Greylisting
  • GFI MailEssentials 2012 or later: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GFI\MailEssentials\Antispam\Greylisting

If the Greylisting key does not exist, you have to create it first. Within the Greylisting key, create a new DWORD (32bit). Assign the RegValue: BlockPeriod. Value: (time in minutes)

Here an example:

Greylist

Note: Please ensure that the GFI MailEssentials services and Microsoft Exchange Transport service are re-started after changes were made to the above keys.
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  1. Priyanka Bhotika

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