Milter-greylist

Hi,

I'm wondering if anyone has any stats tools for milter-greylist which can go
through sendmail logs and pull out messages with the longest delays for delivery?

Like the baseplan.com issue I just posted about, it would be good for me to be
proactive and try and see what domains trying to send to my clients are having
these types of excessive delays for delivery because of their odd mail servers
configurations.

Are there any such tools?

Thanks.

Michael.