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Re: We need an IETF BCP for GREY LISTING

2011-10-12 08:43:16

Every discussion list I know comes from a single IP or a very small
set of IPs, so the first message or more likely the subscription
confirmation might be delayed, but nothing after that.

mail from lists at google, yahoo and the like has a constant IP address for a 
given list?

Good point.  It doesn't, but there's enough mail from Google and Yahoo
that their IPs all get whitelisted pretty quickly.