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SORBS – back soon

If you’ve tried to get an address delisted from SORBS this week you’ll have found that their site is degraded, and there’s no way to request delisting. They’ve been dealing with some very nasty database / hardware problems and while they’re fixing those the externally visible SORBS services are running in a read-only mode (where […]

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Blocklist changes

Late last year we wrote about the many problems with SORBS. One of the results of that series of posts was a discussion between a lot of industry professionals and GFI executives. A number of problems were identified with SORBS, some that we didn’t mention on the blog. There was an open and free discussion […]

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SORBS Progress

A little bird tells me that GFI have resolved their primary blocking issue on SORBS problems. If all goes well I’d expect their infrastructure and policies to improve significantly over the next few months. We’ll wait and see whether the data quality begins to improve after that.

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Office cat says

All work and no cat petting makes for a very cranky, and in the way, cat. Return Path has turned our recent series of blog posts about SORBS into a handy list for what people SHOULD do when they’re intending to run a blocklist. More regular posting will return next week.

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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 […]

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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 […]

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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 […]

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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 […]

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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 […]

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  • 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


  • iCloud Service Disruption

    40% of iCloud users were affected this morning during a service disruption between 2:15AM and 9:30AM. Apple System StatusNo Comments


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