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The network should be invisible The network should be noise free |
Sandviksveien 32 NO-5036 Bergen Tel: +47 9807 1263 Email bsdly@bsdly.net |
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Peter's home page
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bsdly.net - a traplist collected by Peter HansteenDid you think that you have been spammed by one of my users in the bsdly.net domain? Or for that matter, somebody from bsdly.com, dataped.no, lfja.org, ehtrib.org or a few others? More likely than not, what you have been seeing is that somebody spammed you, and they used a made up return address - where the domain (the part after the @ sign) happened to be equal to one of these domains. Make no mistake, we do not support such activities. Take a look at this list of addresses I've collected, all in domains I admin. Not a single one of them were actually deliverable, and most of them appear to have made it into the log files where I found them as To: addresses for messages from mail servers about failed delivery to an address in their domain. At one point we realized that spammers use the same list of addresses as return addresses for the spam they send and as the addresses they send to while ripping off their unbelievably gullible customers. So we started collecting. The list, now at 26539427 entries (click here to download the full list), is not a complete corpus of all faked From: addresses referencing those domains (we're bound to have missed an unknowable number), but it does seem to do the trick. As time went by, we even scraped authentication logs for failed SSH and POP3 logins (see articles such as The Hail Mary Cloud And The Lessons Learned (tracked, prettified version) and Password Gropers Take The Spamtrap Bait (tracked, prettified original) for reference) and constructed fake @bsdly.net addresses from the supposed usernames. A partial history (the log starts 2017-05-20) of when spamtraps were added and from which sources can be found in chunks in this log directory (or at this alternate location). Read on for a bit of information on the alternate sources. If you have sent mail to any of these addresses in the last 24 hours, it will take a while more before you will be able to reach any real users in those domains. In the meantime, you can click the PF tutorial link on the left for one way to find out what happened. You could take some time out to have a look at one of several good tutorials on reading mail headers too.
If you like, you can view the list of currently trapped IP addresses at A few other lists we produce here are available from this directory. Please read the comment at the top of each for links to further explanations. Note: Since early 2018, http (port 80) requests to all bsdly.net resources are redirected to https (443). Most systems handle this correctly, but I see some failures in my logs. At last count, Fri Apr 17 15:10:01 CEST 2026 , we had 688 active spam senders trapped. You can download the most recent list of trapped hosts from here or from the NUUG.no mirror (copied at 15 minutes past every full hour). For a rundown of the principles and ethics of how this list is run, see the How I Run This List, Or The Ethics of Running a Greytrapping Based Blacklist page.
Note: in The Things Spammers Believe - A Tale of 300,000 Imaginary Friends (also available trackerless but with "classic formatting" The Things Spammers Believe - A Tale of 300,000 Imaginary Friends) we celebrate a special occasion with copious links to earlier screeds. And a few years on, we were moved to write a retrospective, Eighteen Years of Greytrapping - Is the Weirdness Finally Paying Off? (also here), in which it becomes clear that a compact majority of current spamtraps are, in fact, synthetic. PS: I've written a blog entry (also tracked, prettified entry) about this too, with some further info. Later blog entries (most recently Maintaining A Publicly Available Blacklist - Mechanisms And Principles, dated April 14, 2013, also available with prettier formatting and G's trackers here) have some followups and additional information. This file is a list of the initial batch added for one of the domains, preserved for the arcihives. All fed to spamd, of course, and now included below. It is worth noting that this list of email addresses is updated only when I have a few minutes, so if it's static for too long, I'm probably just busy or even (shock, horror) away from my computer.
The full version of the famous list, all 26539427 entries, here for reference and for spammers to pollute theirs, freshly updated is here. The most recently added, generally during the current month, are here:
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