My wife and I were lucky enough to be able to purchase a new car earlier this year. It's a nice car and we love it. But ever since then, seemingly once a month or so, I get a…
First published in 2005 , the FCC's Wireless Domains list was intended to be a list of domains associated with mobile devices (cell phones, pagers, etc.) and that senders of…
Ever seen the @InterestingSBLs twitter account? It's kind of interesting and occasionally entertaining. It highlights various SBL entries that its anonymous author finds &quo…
MailChimp's John Foreman explains the usual reasons why sending to purchased lists is a bad idea, but then he adds on one important practical fact: They perform very poorly. …
From Brian Krebs: "The backdrop of the story is a long-running turf war between two of the largest sponsors of spam. A true-crime tale of political corruption and ill-fated …
Probably, implies Return Path based on a correlation between a typical Spamhaus blacklisting and drop in inbox delivery rates at Gmail. I think it's safe to assume that Goog…
A friendly representative of a company who helps small businesses sell products asked: "We're having problems forwarding mail from our customers back to our users due t…
Smart web developer and systems admin Mike Cardwell put together something neat that I think you'll want to check out: Email Privacy Tester . Plug in your email address, and …
DMARC (specifically, DMARC with a p=reject policy) does one thing: It makes it very difficult for somebody to use your domain in a from address without your permission. It doesn&…
Allow me to share with you my rough notes compiled during my recent configuration of email and DKIM on a new Ubuntu VPS installation. Hopefully these helpful hints will help the …
If you've ever set up catch-all domain names, that accept mail destined to any address, or set up your MTA in a way where all mail is accepted before checking to see if the r…
A few weeks ago, somebody on the Mailop list asked about an email they received. Turns out, it was a Challenge/Response spam filter. You know, one of those emails from a robot th…
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…
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 account…
Michael Adkins, Mail Integrity Engineer at Facebook summarizes it thusly : "STARTTLS encryption is widely supported and has achieved critical mass despite some issues with c…
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 res…
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 (Emai…
That's a question I get asked from time to time, so I figured this would be a good place to link to numbers. As reported on CNET today : "The company said it has 110 [mi…
Now that Yahoo and AOL have both implemented "p=reject" DMARC policies, Google has modified their Google Groups discussion group service to "play nice" with …
Today, AOL announced that they, too, have adopted a "p=reject" DMARC policy . The same considerations previously mentioned as applying to Yahoo Mail users now apply to…
Surprise! Or was it? I've been warning for a while now that DMARC doesn't play nice with mailing lists . But really nobody, not even me, thought that a big ISP like Yahoo…
All this talk about Yahoo's recent DMARC policy change got a friend to ask me about her domain name and whether or not this change has any impact on her. Ellen asked me, &qu…
Yesterday, Yahoo posted " an Update on our DMARC Policy to Protect Our Users ." They've also posted " Yahoo DMARC Policy Change - What Should Senders Do ."…
How dare Yahoo update their DMARC policy without warning the internet community of the potential fallout from doing so. At least, that's what some other folks have said. My …
In the next chapter in the story of Yahoo's recent DMARC policy change , Andrew Barrett shares a snapshot of what percentage of an example email service provider's clien…
Yahoo's recent DMARC policy changes have made it so that Yahoo subscribers will now have trouble participating in old fashioned LISTSERV-style discussion lists. When a Yahoo …
A few days ago, Yahoo updated their DMARC policy setting to "p=reject." What this means is, mail containing a Yahoo from address is basically no longer considered legit…
I have no problem helping a client address deliverability issues, even if their industry or politics encompass something I don't personally approve of. My friend Mickey Chan…
The WHOIS process and protocol isn't just some nerd thing that goes back a hundred years; it's a valuable public directory for savvy internet users to be able to identif…
The Apache Software Foundation just announced the release of SpamAssassin 3.4.0 via a message posted to the SpamAssassin announcements email list by project chair Kevin A. McGrai…
As reported over on the iDownload blog (and as mentioned to me by others), Gmail had a significant oops lately. Apparently, there was some system glitch that resulted in some ac…
On January 9th, Google announced that your Google+ contacts (people in your G+ circles) will now automatically show up as contacts inside of Gmail. This isn't really a good …
