Jeffrey Altman > On Apr 15, 2014, at 10:38 PM, Theodore Ts'o <tytso@xxxxxxx> wrote: > >> On Tue, Apr 15, 2014 at 10:23:22PM -0400, Michael Richardson wrote: >> So, as a WG chair, a person known to me just tried to post to the list >> From a brand new yahoo.com mail account. They aren't subscribed with that >> address. I would normally just approve, and add them... >> >> It seems to me that I must now actually reject, because it would affect other >> subscribers. >> >> I'm now thinking that we need to remove all the @yahoo.com addresses from >> posting to ietf mailing lists. > > So on my mailman configuration (which I believe is the default), if > alice@xxxxxxxxxxx receives 5 hard fail bounces she will get > automatically suspended from the mailing list. So a single e-mail > from a @yahoo.com address won't cause damage, and if seven days go by > without any further bounce messages, the "bounce counter" gets reset > to zero. The problem comes if you have many e-mail messages from > yahoo.com users (which according to yahoo and the DMARC cheerleaders, > shouldn't happen happen, because mailing list traffic is > "insignificant" :-). I took a different approach. I left the bounce detection on but switched all @yahoo.com accounts to digest mode. Since the mail now comes from the list instead of the @yahoo.com sender there are no rejections. Not a perfect solution but it prevents harm to non-@xxxxxxxxx list participants. Jeffrey Altman