Hi everyone, Just to let you know that on the 28th of October, there were 234 members of the xwiki users list who’ve been automatically disabled (ie they’re not going to receive mails). This is apparently caused by a change in Yahoo’s email policy: <gumush(a)gmail.com>om>: host gmail-smtp-in.l.google.com[74.125.133.27] said: 550-5.7.1 Unauthenticated email from yahoo.com.br is not accepted due to 550-5.7.1 domain's DMARC policy. Please contact the administrator of 550-5.7.1 yahoo.com.br domain if this was a legitimate mail. Please visit 550-5.7.1 https://support.google.com/mail/answer/2451690 to learn about the 550 5.7.1 DMARC initiative. o3si17254181wjx.109 - gsmtp (in reply to end of DATA command) So if you’re in that case, please contact Yahoo as mentioned in the message above. Thanks -Vincent

This is partially XWiki's infrastructure fault, too. DMARC doesn't work well with mailing lists, since they tend to break DKIM signatures. The only way to fix the problem (at least for the majority of emails) is to remove the footer from the configuration. So, options: - remove the footer, which means that "incompetent" users will have a hard time finding information about unsubscribing, but allows users from modern email providers to subscribe - keep the footer, which makes it harder for legitimate users to stay subscribed On 11/02/2016 07:57 AM, Vincent Massol wrote: