On Oct 15, 2008, at 11:01 AM, Marco wrote:
we made the experience that not greylisting itself is the problem. the problem are miss configured mailservers with wrong queue times or servers interpreting the greylisting "temp error" code as an "error".
There are times, where the sending MTAs queue size is far to big for the MTA to meet the queue times. I saw such problems multiple times. When graylisting is configured for too short acceptance time, you will have messages, which won't be transmitted.
My 0.015€.
- Dan