First Day of Listmas: Slow Delivery
7 December 2017
On the first day of Listmas, my data showed to me something’s causing slow delivery… Slow delivery rates are a real factor all year, but they become especially pointed and painful between Thanksgiving and Christmas. They happen for all kinds of reasons. So, each weekday until the Friday before Christmas, we’re going to look at things
Back to Basics: Where does Spamhaus get off…
11 January 2017
One of the more popular questions that come up deals with ISPs1 using DNSBLs2, especially Spamhaus lists. The question usually goes something like this: Who are the operators of that list and what gives them the right to regulate commerce? Are they run by a government or something? A Brief History of DNSBLs The year is
Who Drives DMARC?
23 June 2016
Every time that someone comes up with a new way to talking about mail back channels it gets just a little more complex. First, we had SPF. That was a relatively easy thing. Add a text record to DNS that says where your mail is coming from and you’re set. You even had options to
About that Gmail “Promotions” tab
13 April 2016
It seems that a lot of people still misunderstand what the Gmail promotions tab is and does. How do I know this? Because I still get questions from time-to-time along the lines of “How do we get our mail out from the ‘Promotions’ tab and back into the inbox?” All that Google has done here
Drafted for the wrong fight
8 March 2016
My friend [acp author=”Al Iverson” title=”SPF Still Matters in 2016″ id=”Iverson-01″ url=”http://www.spamresource.com/2016/03/spf-still-matters-in-2016.html” year=”2016″ month=”March” day=”7″ year_accessed=”2016″ month_accessed=”March” day_accessed=”7″ media=”blog”]{author} just wrote a new blog post: “{title}”[/acp]. One of the things that he said struck a chord with me: “‘But SPF is worthless,’ occasionally a spam fighter will cry.” It struck a chord with me because SPF wasn’t
So tell us how you REALLY feel
22 February 2016
People will sometimes ask me why I hate the Lead Generation (lead gen) and Payday Loan industries. Ultimately, it’s because they have such deep problems that I don’t think that any self-respecting ESP should take them on as a client. This morning, I saw a [acp author=”United States Federal Trade Commission” id=”FTC-01″ title=”Data Broker Defendants Settle FTC
When systems disagree
15 July 2015
A co-worker recently brought to my attention an interesting problem which involves differing ideas concerning precedence between RFC5321 and RFC3463. The result of the issue is that mail systems may experience unneeded delay in delivering mail. What’s going on? Gmail is returning the following error for over quota accounts: “452 4.2.2 The email account that you tried
Did you catch the death of Postini?
25 June 2015
According to [acp author=”Google” title=”Postini Transition to Google Apps” id=”Goog1″ media=”website” url=”http://postini-transition.googleapps.com/” YEAR_ACCESS=”2015″ MONTH_ACCESS=”June” DAY_ACCESS=”25″]Google[/acp], all mail stopped flowing through Postini servers on June 15. Any Postini clients who had not made the transition by the end of May were supposed to have been forcibly transitioned then. Postini was a traditional troublespot when it came to