Monthly Archives: December 2007

SenderScore update

Matt has posted a bit more about the SenderScore Blacklist, following up on my post about the changes at Comcast. George Bilbrey, VP and General Manager, for Return Path followed up with him to explain a bit more about the blacklist. George says: The blacklist is based on more than the summary Sender Score on […]

1 Comment


A few weeks back I posted about changes a client of mine was making in order to improve their IP reputation and their delivery. They are now getting inbox delivery at the major ISPs.  Their actions are up and  they are seeing great results. They did not implement all of my specific suggestions. Instead, they […]

No Comments

Changes at Comcast

I can usually tell when one of the ISPs makes some change to their incoming spam filtering just by my call volume. The past few weeks the ISP in most of my calls has been Comcast. And, what do you know, they have made changes to how they are filtering email. According to their bounce […]


Best practices and ISPs

A couple articles came out today talking about ISP requirements and how to find them. EmailInsider talks about ISP best practices and how merely complying with CAN-SPAM is not enough to get good delivery at the ISPs. Meanwhile, over at ClickZ, Stefan talks about what the ISPs want from you and how to find the […]

No Comments

Email standards at the email client

The Email Standards Project launched last week. This group is looking to lobby and encourage companies to make their email clients comply with HTML display standards. They are also identifying how different clients display email with HTML. Check out their website, and see what they’re doing. I do apologize for the light blogging recently. I […]

No Comments
  • Lost in the mists of time

    Over on the Farsight Security blog Joe St. Sauver talks about some of the early days of online abuse, on usenet. Laura and I were on the periphery of early usenet abuse, mostly as users, but Usenet (and IRC) around then were the places we both started with email abuse.No Comments

  • Ongoing Yahoo delays

    I've been hearing from folks over the last few days that they're seeing an uptick in deferrals from Yahoo! The deferrals are not uniform. ESPs report they're seeing some, but not all, customers affected. Other ESPs aren't seeing any changes. It's not just you. But it would be very worthwhile to dig into engagement and other stats. It's possible this is a new normal at Yahoo! and they're tightening filters to catch mail that doesn't fit their standards but was previously difficult to filter.No Comments

  • AOL starts using Sender Score Certification

    Good news for Sender Score Certified IPs. Return Path recently announced that AOL has joined the list of ISPs offering preferential treatment to certified IPs.  1 Comment