OK Ben.. I'm a litle lost.. I made a post to a list.. not using gmail or yahoo.. or sbcglobal.. or any of those.. and it bounced from every single facebook/att/sbsglobal subscriber to the list.. so is it posts from? or to? or both? and do you see a fix in sight for this new set of problems? with hotmail et al.. now yahoo et al affected.. that pretty much decimates many of our email lists. Thanks.. On 4/10/14, Ben Parker <[log in to unmask]> wrote: > On Tue, 8 Apr 2014 10:40:34 -0700, "Eckstine, Nate" > <[log in to unmask]> wrote: > >>Is installing DKIM the solution? > > No. The problem is that Yahoo, in their DMARC specification for mail with > a > From: ****@yahoo.com address (and other international variations like > *@yahoo.co.uk, *@ymail.com, *@rocketmail.com, etc.), chose to tell any and > all ISPs that do inbound DMARC/DKIM checking, > > "If the mail that says From: *@yahoo.com does not come from our own > servers > (defined by specific IP ranges), not only is it unreliable, and not OK, but > you should not accept it at all, but reject it." > > So the ISPs that do inbound DMARC/DKIM checking are not really at fault. > They are simply doing what Yahoo.com has told them to do. Adding DKIM to > your LISTSERV server won't help because mail with From: *@yahoo.com will > come from the IP of your server which is not (and cannot be) in the IP > range > of acceptable IPs for mail with From: *@yahoo.com to be valid. > ############################ To unsubscribe from the LSTOWN-L list: write to: mailto:[log in to unmask] or click the following link: http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTOWN-L&A=1