On Mon, Aug 08, 2011 at 09:29:59PM -0400, Wietse Venema wrote:
> In my experience, gmail does not send one message from a massive
> number of IP addresses. It copes with greylisting just fine, which
> does not surprise me, considering that greylisting is such a
> widely-used technique.
Indeed. The worst I've seen in casual log watching (without being
thorough in analysis) is maybe 15-20 minutes from the first gmail
message attempt until acceptance and delivery.
I changed MX last month, and on the new host I had activated the
after-220 tests from the beginning. By now I think most gmail
outbounds are in my postscreen whitelist. I am quite certain that
nothing from gmail was lost.
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