On 2016-08-26, Peter N. M. Hansteen <pe...@bsdly.net> wrote: > On 08/26/16 13:54, Stuart Henderson wrote: >>> that domain's mail traffic started coming through to Google-hosted >>> domains, and whenever somebody makes a new contribution to the >>> spamtraps collection[1], I get reports from DMARC-reporting domains as >>> well as the usual traces in the greylist. >> >> Just switch p=quarantine to p=none in your headers. You'll still get >> these benefits and it won't screw up your list mail. > > I'll try just that for a few days at least. If there are no detactable > downsides, I'll just leave it at that. I was a bit worried about > deliverability to google hosted domains, but
It's very likely to be fine, I'm doing this on some transactional mail and haven't hit major problems yet. Getting listed on dnswl.org helps too, many people use this whitelist to exempt from greylisting and add a bit of positive scoring. (btw the biggest problem I see with gmail deliverability is when you send into them over IPv6, they are far tougher on mail delivered this way than over v4. > > gmail were supposed to be setting DMARC p=reject in their mail >> earlier this year but seem to have given up on that idea for now. >> Good job too, it is unworkable for a general-purpose email >> account until the mailing list/forwarding problem is fixed. > > this sounds like I should perhaps worry a little less. Some larger mail providers definitely like to see at least partially valid DMARC headers, but seem to not mind a few mismatches as long as you're not setting reject/quarantine. > Thanks! Hope it helps - I'd be interested to hear feedback after you've run with p=none for a bit.
