Greylisting - configurable CIDR
Idea shared by Nathan - 11/1/2019 at 8:46 AM
Under Consideration
Greylisting relies upon a specific IP address retrying deliveries but with large providers, the retries may come from different IP addresses. 

I therefore propose a configurable option that allows the server administrator to set the greylisting to either apply to the original IP (/32) or other lengths, perhaps /24 and /16. This will not cover scenarios where retries come from different blocks but it is likely to speed up delivery in many scenarios. Otherwise software we use applies similar logic successfully.

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Employee Replied
Employee Post

Thanks for the suggestion!  I've submitted this as a feature request for you.

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