This is useful. > 4.1.3.3. Mailing Lists > > [RFC6377] provides some guidance on using DKIM with Mailing lists. > The following mitigation techniques can be used to ease > interoperability issues with DMARC and Mailing lists: It should probably be indicated whether these techniques would be applied to all messages, or only to messages sent from domains with a DMARC policy other than "p=none". (I prefer the latter.) ... > o Configuring the MLM to "wrap" the message in a MIME message/rfc822 > part and to send as the Mailing List email address. Many email > clients (as of the publication of this document), especially > mobile clients, have difficulty reading such messages and this is > not expected to change soon. This seems like a quite elegant solution. I'm very surprised by the second sentence - are these clients that have difficulty with many Content-Types or is it a specific issue for message/rfc822? Thanks Brian