Greetings, On Sat, Aug 7, 2021 at 07:54 Stuart Henderson <s...@spacehopper.org> wrote:
> On 2021/08/06 11:31, Stephen Frost via mailop wrote: > > Greetings, > > > > We have quite a few folks with @free.fr addresses, and a few with the > > other domains listed in $subject, on the @postgresql.org mailing lists > > and recently we've started getting bounces back for some of the emails > > we send out, claiming they're spam (which they certainly aren't). > > > > If this continues, we're going to have to unsubscribe them all, but > > figured I'd reach out here first to see if there's any free.fr admins > > (or those for the other domains, though we have just a few of those) > > paying attention who could help us figure out why these emails are being > > classified as spam and help us work to a resolution. > > > > These emails from coming from 217.196.149.56 / > > 2a02:16a8:dc51:0:0:0:0:56, SPF matches, DKIM signed, passes DMARC, etc. > > Our best guess is that the ones being marked as spam have too many URLs > > or some other silly measure that's tripping up a poorly designed spam > > filter. > > Whether a message passes DMARC or not depends on the From: address in > the email headers. Unless you rewrite that (which looking at the archives > it doesn't appear you do) you'll see rejections from some sites if that > domain publishes a p=reject policy. Could it be due to that? The bounces are pretty much exclusively from our announce mailing list, where we do force a From: address that’s under our postgresql.Org domain. Here’s an example from our archives that was bounced for being “spam” (though only from the few domains listed above, and we deliver to a something like 20k addresses, not sure how many domains offhand, but a lot): https://www.postgresql.org/message-id/162786859325.25751.2226078786729473978%40wrigleys.postgresql.org We do also take quite a bit of care on our regular mailing lists to ensure that we don’t break DKIM, which has generally been successful when it comes to being allowed even when restrictive policies are in place, but that isn’t relevant to whatever is going on here. Thanks, Stephen >
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