It appears that Christian Huitema <huitema@xxxxxxxxxxx> said: >Yes indeed. More documentation will help, if only to dismiss myths. A >quick search shows that some reputable mail services like Proton Mail or >Mailbox.Org do provide IPv6 addresses for their MX records -- Those are providers of individual mailboxes. What they do works fine if you want a mailbox or two. Gmail has good IPv6 support, too. Our mail systems run mailing lists and send a signficant volume of transactional mail, e.g., notices when an I-D is uploaded or a document's status changes. None of them do that, nor does any other credible provider I'm aware of that has IPv6 support. Is there some reason you think it was useful to make that comment? R's, John