Fedora-List & Greylisting

[Mike Klinke]

On Wednesday 23 February 2005 09:49, David Cary Hart wrote:
> I notice the following in the logs (these are three separate
> mails):
>
>         /var/log/maillog.1:Feb 22 21:56:29 smtp
> postfix/smtp[10311]: E90DC2FC197: to=<fedora-list at redhat.com>,
> relay=mx3.redhat.com [66.187.233.32], delay=12, status=deferred
> (host mx3.redhat.com [66.187.233.32] said: 451 4.7.1 greylisted
> for 30 minutes and0 seconds. (in reply to end of DATA command))
>
>         greylisted for 9 minutes and 32 seconds. (in reply to end
> of DATA command)
>
>         greylisted for 9 minutes and 27 seconds. (in reply to end
> of DATA command))
>
> While I understand the basics of greylisting, I cannot figure out
> how the variable delay is being calculated. Doesn't 30 minutes
> (plus the SMTP delay) seem like a VERY long greylist deferral?
>
>

I suspect the fact that you were able to deliver the mail in less 
than 30 minutes as seen in your last two entries means that the 
time period of the greylisting at that server is really something 
less than 9 minutes, 27 seconds in spite of the 30 minute 
"temporary error notification" on your first contact.

Regards, Mike Klinke