> I think he meant whitelisting when the rDNS is verified (FcrDNS) by a
> "double lookup". That's what a postfix check_client_access will do.
> [snip]


I think I wanted to whitelist inside my greylist the google IP netblocks

They have a zillion outbound MX servers and some clients "appear" to be
experiencing serious delays when we fine tune some other parameters.

So therefore, whitelisting google IPs in the greylist data would allow the
google email to go straight through to SA for scoring and other processing

- rh