On 17.09.2019 16:20, Valeri Galtsev wrote: > > > On 2019-09-17 09:06, Miroslav Geisselreiter wrote: >> Hi guys, >> >> when I send e-mails to CentOS mailing list <centos at centos.org>, I >> received DMARC / DKIM failure reports. Is it possible to solve this >> problem and if so how? >> > > That is why DMARC took 10 years of heated discussions, before it was > actually implemented - in first place by big boys who will never > hear/listen. DMARC breaks mail forwarding. Period. Breaks normal way > mail lists were operating, but mail lists found work around: > > I maintain mail lists for the department, mailman is mail list server > we use. There is setting: Replace the From: if set to "Munge from" > then mail list will replace sender with mail list itself and it will > appear as send by ... through mail list. DMARC enforcing folks/servers > will be happy. > > Just my $0.02 > > Valeri and any S/MIME signature is broken ... indeed there exist mail lists, that conserve the S/MIME signature ...