-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Lazy git that I am I only quite recently configured DMARC for bsdly.net, and it actually had at least some of the desired effect: that domain's mail traffic started coming through to Google-hosted domains, and whenever somebody makes a new contribution to the spamtraps collection[1], I get reports from DMARC-reporting domains as well as the usual traces in the greylist.
The only downside is, the traditional forwarding that mailing lists do *also* triggers the DMARC dark magic, and there is a significant risk that messages sent with senders in DMARC domains via the mailing list to recipients with a somewhat DMARC-aware setup will be discarded. However, the solution or workaround is to set up the mailing list for the DMARC magic to do some benign rewriting of headers - the message at [2] describes how the FreeBSD list admins solved the problem for their lists. If the OpenBSD list admins are reading this: would it be possible to make a similar change in the OpenBSD mailing list configuration? All the best, Peter [1] http://www.bsdly.net/~peter/traplist.shtml, also http://bsdly.blogspot.com/2007/07/hey-spammer-heres-list-for-you.html [2] https://lists.freebsd.org/pipermail/freebsd-announce/2014-May/001550.htm l - -- Peter N. M. Hansteen, member of the first RFC 1149 implementation team http://bsdly.blogspot.com/ http://www.bsdly.net/ http://www.nuug.no/ "Remember to set the evil bit on all malicious network traffic" delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds. iQIcBAEBCAAGBQJXv+DwAAoJELJiGF9h4DyeBLIP/jEqkkeRF247MYBUAh2COajM 6oyMXBJmEmPMvyXqo5g6QKKo9ySx6BWYcPTvfL6toUHkI7tfciEwtnbIrLWiixjp D0Ga1x1Cgu8aAS2VnyecinzcxfHCrNMQZmTr2/M3D6LE6Vv90di1IZR5oBUumQAy VvzGlBn5TpE3BWC+5E4PiTe+XSWY+lGoL02s4fWTP/U0vYy8vkGAINIkHJ3PW/dH ab7sBFGBVL6QfjthAL+MvyW1BbUo7iSrni9AQ+G+N5/cJSmRrhgNdZ5WwznyzOdA tj1fDz3Sc+Wc6ScZ8F1TFkFMlg3R7EPClYcqw3cLz+lLehIcaV7AdbaQ+KbtRSsG eyS0+ZgXOlGmffBBLTIxH4TAgprGmyq1tdq2vUXRO4zaQeOZLmJcTstQfTovmFU0 TnmMR8pi5IMh6chvwT8SnLMbJaI3W3575cL/DojjKVDEdyFVcGgOHCx2FozEGJm0 eBgerhX8W0sk+bmtaL06jRMn+7S79nV6HzdEIUfPHN8JFrgfmnOrTcbwiEKpLhgO MNa9HYQirPavF54suO3pfNxre6cSIhOy/YeYhvViVtJEjTVapzDpZygw+XHoL0AL 1yCr+1vtNhFuC3P3MjT8jl46yRLqkZkoKP6sEWsYlJ4BMTfWUG3jpGlEVbxY1RXt JoDHQctNKj3g7d/IKUAf =ueX6 -----END PGP SIGNATURE-----
