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Yearly Archives: 2010

GFI/SORBS – should I use them?

Act 1 • Act 2 • Intermezzo • Act 3 • Act 4 • Act 5 Management Summary, Redistributable Documents and Links In the past week we’ve demonstrated that the SORBS reputation data is riddled with mistakes, poor practices, security holes and operational problems, and that the quality of the end result is really too […]

18 Comments

GFI/SORBS – I’m blacklisted, now what?

Act 1 • Act 2 • Intermezzo • Act 3 • Act 4 • Act 5 Management Summary, Redistributable Documents and Links In the past week we’ve demonstrated that the SORBS reputation data is riddled with mistakes, poor practices, security holes and operational problems, and that the quality of the end result is really too […]

6 Comments

GFI/SORBS considered harmful, part 3

Act 1 • Act 2 • Intermezzo • Act 3 • Act 4 • Act 5 Management Summary, Redistributable Documents and Links In the last few days we’ve talked about GFI’s lack of responsiveness, the poor quality of their reputation and blacklist data, and the interesting details of their DDoS claims. Today we’re going to […]

8 Comments

GFI/SORBS – a DDoS Intermezzo

Act 1 • Act 2 • Intermezzo • Act 3 • Act 4 • Act 5 Management Summary, Redistributable Documents and Links I’ve been stage-managing for a production of The Nutcracker this week, so musical terminology is on my mind. In opera, the intermezzo is a comedic interlude between acts of an opera series. This […]

7 Comments

GFI/SORBS considered harmful, part 2

Act 1 • Act 2 • Intermezzo • Act 3 • Act 4 • Act 5 Management Summary, Redistributable Documents and Links Yesterday I talked about GFI responsiveness to queries and delisting requests about SORBS listings. Today I’m going to look at data accuracy. The two issues are tightly intertwined – a blacklist that isn’t […]

23 Comments

GFI/SORBS considered harmful

Act 1 • Act 2 • Intermezzo • Act 3 • Act 4 • Act 5 Management Summary, Redistributable Documents and Links A little over a year ago the SORBS blacklist was purchased by GFI Software. I had fairly high hopes that it would improve significantly, start behaving with some level of professionalism and competence […]

10 Comments

Preferences pages

As often as I talk about how badly companies send mail, I think it’s always a good idea to highlight when I find companies doing good things. Today’s example of a company making me happy is Sur la Table. I’ve been on their mailing list for quite a while and do enjoy the offers and […]

No Comments

Email attacks

Ken has an article up today about the ongoing attacks against ESPs and email marketers. In it he says: Someone in permission-based email marketing should have sounded the alarm about the wedding-photo attacks months before Blumberg did. The attacks were being talked about on at least 2 different private lists. One made up primarily of […]

4 Comments

Happy Thanksgiving

I’m still catching up from being out last week, so no blog post today. I do, however, have tart to share. Mostly. Sorta. We ate it all.

2 Comments

ESPs being targeted

There has been an ongoing, concerted attack against ESPs recently. Today ReturnPath published some of what is known about the attack. This is an organized, deliberate, and destructive attack clearly intent on gaining access to industry-grade email deployment systems. Further, the potential consequences should ESP client mailing lists be compromised at this time of the […]

1 Comment
  • HE.net DNS problems

    Hurricane Electric had a significant outage of their authoritative DNS servers this morning, causing them to return valid responses with no results for all(?) queries. This will have caused delivery problems for any mail going to domains using HE.net DNS - which will include some of their colocation customers, as well as users of their free services - but also will have caused reverse DNS to fail for most servers hosted by Hurricane Electric worldwide, so if any of your mail is being sent from HE hosted machines you may have seen problems. (We're HE customers so we noticed. Still happy with them as a vendor.)No Comments


  • 65.0.0.0/8 DNS issues

    If you're sending email from any address beginning with a 65 - in 65.0.0.0/8 - it's possible you'll see some delivery problems. Something appears to be broken with dnssec signatures for the reverse DNS zone, leading queries for reverse DNS to fail for anyone using a dnssec aware DNS resolver (which is almost everyone).1 Comment


  • Our green bar certificate is going away

    Later today we'll be switching from an Extended Validation ("green bar") SSL certificate to a Domain Validation certificate. This isn't exactly a planned change but I'm waiting for responses from Comodo before I go into it too much. I'll share some more details next week.3 Comments


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