[Greylist-users] Whitelist entries and 4xx failure codes -Note to implementors

Frank Bax fbax at sympatico.ca
Thu Oct 7 07:12:04 PDT 2004

At 10:51 AM 9/28/04, Frank Bax wrote:

>At 12:21 AM 9/28/04, Scott Nelson wrote:
>>At 02:24 PM 9/27/04 -0400, Frank Bax wrote:
>> >
>> >I am using OpenBSD greylisting implementation that uses 450 by default, but
>> >I can configure it to use 451.  My ISP provides secondary MX support and
>> >that machine does not implement greylisting at all.  I am finding that a
>> >significant volume of spam is arriving at mailboxes by using the secondary
>> >MX.  Am I likely to see a reduction in servers using secondary MX if I
>> >switch from 450 to 451?
>Since posting this, it looks like OpenBSD 3.5 does not allow me to change 
>the greylisting reply after all.  The docs are not totally clear, but it 
>looks like (and limited testing appears to confirm) that the options to 
>change reply code only affect blacklisted ip addresses, and that 
>greylisting reply is hardcoded.

I changed the hardcoding in spamd on OpenBSD to use 451 instead of 450 and 
removed whitelist entries for hotmail at the same time the custom spamd was 
implemented.  Hotmail messages gets through anyway -  just like Evan predicted.

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