Thanks, everyone for the advice. This has been useful. -- Terry
-----Original Message----- From: dmarc [mailto:[email protected]] On Behalf Of Roland Turner Sent: Thursday, February 6, 2014 9:41 PM To: [email protected] Subject: Re: [dmarc-ietf] Known DMARC failures of legitimate email On 02/07/2014 03:19 AM, Michael Adkins wrote: > DMARC has the notion of 'trusted forwarders' defined in the spec and > accounted for in the reporting. There are a few different ways to do > that, some that border on secret sauce, and are mostly a combination > of a reputation or trust system combined with something observable in > the header or the traffic patterns. ... > From experience, I can tell you that if you exempt email signed by > google groups, yahoo groups and it's international flavors, and > microsoft live groups, then you will have solved the problem for 90% > of users. Most of the others are also pretty easy to find: any source which has a relatively stable long term message volume and a very low detected spam rate but authentication failures for a large number of domains is almost certainly a well-behaved forwarder that, at least as a first approximation, can be exempted from DMARC processing. - Roland _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
