On Feb 25, 2016 5:03 PM, "Dave Warren" <[email protected]> wrote: > > On 2016-02-25 15:53, Mike Reed wrote: >> >> Hi Brandon, >> >> Does GMail publish a list of its outbound hosts/ranges some place to enable us to whitelist? >> > > _spf.google.com. 300 IN TXT "v=spf1 include:_ netblocks.google.com include:_netblocks2.google.com include:_ netblocks3.google.com ~all" > > It's a lot of ranges, and I'm not sure if Google uses them all for mail today, but they well might tomorrow -- I don't see much point in greylisting mail from Google, other than perhaps to allow for URIBLs to learn of new hosts.
Yeah, we point people to the SPF record. It does include most of our IP space, which is probably broader than it should be, so it's quite larger than our actual sending IPS. At some point we may need to fix that, but obviously the SPF record will always include all senders for Gmail/google and Google apps domains. Brandon
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