Public bug reported: If for some reason a site doesn't want to or can't access a DMARC_ORGANIZATIONAL_DOMAIN_DATA_URL, maybe the site is IPv6 only and there is no IPv6 source of the data, the site should be able to set DMARC_ORGANIZATIONAL_DOMAIN_DATA_URL to None or a null string and avoid the attempted retrieval, the failure of which causes other issues. ** Affects: mailman Importance: Low Assignee: Mark Sapiro (msapiro) Status: In Progress -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1578450 Title: Mailman should allow setting DMARC_ORGANIZATIONAL_DOMAIN_DATA_URL to None or a null string. To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1578450/+subscriptions