ItaliaOnline is rolling out new rules, including the necessity of having a DMARC record (and also a valid DKIM signature), among other things. I believe those kind of delivery placement (on p=none) is a side effect of what they're trying to do.
-- Benjamin -----Original Message----- From: mailop <mailop-boun...@mailop.org> On Behalf Of Paul Smith via mailop Sent: mardi 26 novembre 2019 14:03 To: mailop@mailop.org Subject: Re: [mailop] ItaliaOnLine (@libero.it, +) now interpreting DMARC p=none as p=quarantine On 26/11/2019 12:41, Stefano Bagnara via mailop wrote: > I don't know if ItaliaOnLine postmaster follow this list and if they > consider this new behaviour a feature or a bug, but I wanted to share > this finding/news with you. > > What do you think about this? Do you know other providers making this > "deliberate guess"? It's bad for an ISP to do that. 'p=none' is often used for the case of "we've just started using DMARC and don't know if we've got it set up correctly yet", so treating it as p=quarantine is going to lead to lots of false positives. On the other hand, if this is JUST for mail from msn.com, they may have decided that that domain is established enough that hopefully the admins know what they're doing, so may have an exception to treat mail FROM THAT DOMAIN as p=quarantine (similarly with gmail.com, which also has p=none) -- Paul Smith Computer Services Tel: 01484 855800 Vat No: GB 685 6987 53 Sign up for news & updates at http://www.pscs.co.uk/go/subscribe _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
