Tag: Yahoo

Yahoo Feedback Loop

If you are utilizing the Yahoo Complaint Feedback Loop, you should have received an email today about an upcoming change to the CFL. The message received was: “On June 29, 2015, we will transition Yahoo Complaint Feedback Loop (CFL) administration from Return Path to Yahoo Customer Care. We will continue sending spam reports during this […]


May 2015: The Month in Email

Greetings from Dublin, where we’re gearing up for M3AAWG adventures. In the blog this month, we did a post on purchased lists that got a lot of attention. If you’ve been reading the blog for any length of time, you know how I feel about purchased lists — they perform poorly and cause delivery problems, […]

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Yahoo Mail Deliverability FAQ Updated

Yahoo has updated their FAQ and listed out a number of factors they use to determine if a mail message is spam. IP Address Reputation URL Reputation Domain Reputation Sender Reputation DomainKeys Identified Mail (DKIM) signatures DMARC authentication Autonomous System Number (ASN) reputation Autonomous System Number (ASN) is a globally unique number that is assigned […]

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Yahoo FBL Down

We’re seeing multiple reports that the Yahoo feedback loop stopped working some time in the past couple of days. If you’re not seeing reports, it’s not just you.


Yahoo China Email Services Shut Down

Via mailing lists and Al Iverson’s Spamresource blog, Yahoo China domains ( and are no longer accepting email.  Yahoo announced in April of 2013 they are shutting down their email services in August of the same year and advises users to create new accounts with Alibana.  While the domains still have valid MX records, […]

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Email predictions for 2015

Welcome to a whole new year. It seems the changing of the year brings out people predicting what they think will happen in the coming year. It’s something I’ve indulged in a couple times over my years of blogging, but email is a generally stable technology and it’s kind of boring to predict a new […]

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Yahoo problems

I’m seeing scattered reports today that a lot of places are seeing backed up queues to Yahoo. They’ve had some problems over the last few days and seem to be still recovering. It’s looking like it’s something internal to Yahoo. One set of error messages I’ve seen reported by numerous people is: “451 4.3.2 Internal […]

5 Comments on FCC wireless “do not mail” list

Update: As of mid-morning pacific time on 10/7 has been removed from the FCC list. As part of CAN SPAM the FCC maintains a list of wireless domains that require proof of permission to send mail to. Recently, various email folks noticed that was added to this list. According to the law, senders […]

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Fun with new mailservers

I’m building a new set of mailservers for – our existing mailserver was “I’ll repurpose this test box for a week” about four years ago, so it’s long past time. I tested our new smarthost by sending a test mail to gmail. This is the very first email this IP address has sent in […]


June 2014: The month in email

Each month, we like to focus on a core email feature or function and present an overview for people looking to learn more. This month, we addressed authentication with SPF. We also talked about feedback mechanisms, and the importance for senders to participate in FBL processes. In our ongoing discussions about spam filters, we took […]

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  • Vague reports of Yahoo problems

    A number of people, on different forums, have been asking if anyone is seeing a higher bounce rate than usual with Yahoo. Not sure exactly what's going on here. As I understand it, folks are talking with Yahoo about it. If I hear anything more, I'll share. For now, though, if you're seeing a small increase in Yahoo bounces (or other weirdnesses) others are seeing something odd, too.No Comments

  • Responsive design just got easier at Gmail

    Today Gmail announced they are supporting media queries in Gmail and Google Inbox. This should simplify the creation of emails for multiple platforms. The full list of supported rules can be found on the Google Developer Site.No Comments

  • Brief blogging break

    Sorry about the unexpected hiatus. I picked up a cold that really made me feel fuzzy and writing was an exercise in futility. I'll be back Monday. Meanwhile, Oracle bought another ESP (Bronto) when they bought NetSuite.  No Comments