Spam Resource: All Things Deliverability

For my server running the discussion mailing lists that I host, I'm running OpenDKIM, OpenDMARC and Postfix on Ubuntu. I run a custom mailing list manager that I wrote myself; I keep telling myself that eventually I'll polish the code enough to share it with the world. …

What impact has Yahoo's new "p=reject" DMARC policy had on spam claiming to be from Yahoo.com? "DMARC has reduced spam purported to come from yahoo.com accounts by over 90%," says Alex Stamos, Yahoo's Vice President of Information Security, in his r…

Michael Adkins, Mail Integrity Engineer at Facebook summarizes it thusly : "STARTTLS encryption is widely supported and has achieved critical mass despite some issues with certificate management. A system deploying STARTTLS support for the first time can expect more than h…

As reported on the Mailop list today, Yahoo has modified their Yahoo Groups discussion group service to "play nice" with posts from subscribers at domains behind a restrictive DMARC policy. Google recently implemented very similar changes to its Google Groups servic…

Campaign Monitor's Andrew Bonar reports on the takeaways from a recent presentation  and Q&A session where Gmail's Sri Somanchi chatted with members of the ESPC (Email Sender and Provider Coalition).