Re: greylisting and MAIL FROM signing

David Woodhouse <[email protected]> Tue, 16 Aug 2005 20:31:41 +0100
Newsgroups gmane.mail.spam.srs.general
Message-ID <[email protected]>
On Tue, 2005-08-16 at 15:23 -0400, Stuart D. Gathman wrote:
> I have run into a sort of impedance mismatch between MAIL FROM signing and 
> greylisting.  
> 
> 1. I send a message with signed MAIL FROM (old SES)
> 2. recipient rejects with 450 - try again in 300 minutes
> 3. sendmail tries again, but the timecode has changed, and so
>    the recipients greylisting software thinks I'm a new sender.
> 4. go back to step 2

Reduce the precision of your timecode.

-- 
dwmw2