On Mon, 4 Jun 2012 22:53:54 +1000 David Diggles wrote: > "Greylisting will cause longer delivery delays if the sender has a large > infrastructure and is sending from a different IP when it retries.
Most pooling Services like Yahoo and Google seem to get through eventually these days without whitelisting. I haven't found the time and analysed why (retry from same IP after three attempts or something? etc..)
