On Tue 08/Apr/2014 19:34:35 +0200 John R Levine wrote: > > Just today I did modify it so that any list mail with a From: address > @yahoo.com is re written to @yahoo.com.INVALID. That's the least > intrusive way I've been able to come up with to mitigate the damage. Fair enough. I've copied that suggestion to http://en.wikipedia.org/wiki/DMARC#Human_policy Please feel free to amend that page at your leisure. Ale