Adam Sampson's dkim bookmarkshttps://bookmarks.offog.org/ats/dkimAdam Sampson2013-07-20T14:00:59ZDMARC.org - Domain-based Message Authentication, Reporting and Conformancehttps://bookmarks.offog.org/edit?url=http%3A%2F%2Fdmarc.org%2F2013-07-20T14:00:59ZUsing DNS records to specify how SPF and DKIM should be applied to your domain -- you can set up a magic record and people receiving email will send you reports, which is kind of neat. On the downside, this doesn't solve the killer problems with SPF/DKIM (breaking legitimate forwarding and mailing lists)...