If we implement postgey - emails are delayed by up, to four hours

Hi List

A collegue has some reservations about greylisting in general because of the

inherent delays that would be introduced. I am concerned that the top
management will not be impressed when important emails are delayed by up
to four hours, especially since that delay is dependent entirely on the
third party's mail server retry schedule, and thus beyond our control to
configure.

I have installed postfix and postgrey at my last employer and I didn't see any issues
but are the above reservations warranted As I thought the longest possible delay
in 5 mins using the default settings and once whitelisted will never have to go through
the grey listing process again plus the the fact I could also pre add any important email
address or domains to whitelist_clients list which again avoid going through grey listing process.

Please advise and if possible any good links So I can read and digest as I personaly 
would like to implement grey listing.

Cheers



-- 
Chuck Amadi
ROK Corporation Limited
Ty ROK,
Dyffryn Business Park,
Llantwit Major Road,
Llandow,
Vale Of Glamorgan.
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