[Greylist-users] Possible Enhancements

Scot L. Harris webid at cfl.rr.com
Tue Jan 25 15:52:15 PST 2005

On Tue, 2005-01-25 at 15:59, Jason 'XenoPhage' Frisvold wrote:

> The biggest complaint about greylisting is the initial 1 hour delay when 
> the sender is new to the database.  By doing a reverse DNS lookup on the 
> IP the connection is sourcing from, checking for an MX record, and 
> possibly doing a callback, you can prevent this 1 hour delay.  Insert 
> the IP address into the database with an expiration time, and any 
> further connects from that IP will pass through without any interruption.

I have found setting the delay period to as little as 2 minutes still
provides all of the benefits.  Of course the retry period is controlled
by the sending system, but most of them I have seen actually retry
within 5 to 10 minutes.

Scot L. Harris
webid at cfl.rr.com

Love is sentimental measles. 

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