The "Truncate" DNSBL (zone truncate.gbudb.net) lists IPv4 addresses that have been observed transmitting "email containing spam, scams, viruses, or other malware based on statistics in the global GBUdb network." This "Good, Bad, Ugly database (GBUdb)" is a "real-time collaborative IP reputation system," based on statistics collected by email threat protection software Message Sniffer.
If you're listed on the Truncate DNSBL, can you request removal? No, explains the website. IP addresses are removed automatically, usually within a couple of days of the bad activity having ceased. They warn, however, that in some instances, if enough bad activity was denoted, it may take longer for an IP address to automatically disappear from their list.
Have any more information you'd like to share about this blocking list? Please feel free to contact me and I'll be happy to update this page with your additional information.
All about DNSBLs, aka blocklists/blacklists // Since 2001 // Published by Al Iverson
| Thanks for visiting! Remember that nowadays, (most) blocklists don't really govern deliverability and inbox placement. Want to learn more about email marketing best practices, email technology, and deliverability troubleshooting? Then you'll want to check out my other site, Spam Resource. |
Status of dul.ru: DEAD
As noted by participants of the SDLU mailing list, the Russian Dial-up User List at the domain dul.ru is no more.
The Russian Dial-up User List website is no longer to be found at dul.ru; when you visit that domain you find a simple Russian-language "this domain is for sale" page.
As of May 19, 2015, this domain seems to have been set to "wildcard" status in DNS. This means that DUL.ru is effectively "listing the world;" any site still using the DUL.ru DNSBL zone will reject all inbound mail until this DNSBL is removed from that mail server's configuration.
The Russian Dial-up User list appears to have been a dialup or dynamic blocking list. The intent of this type of anti-spam tool is usually to block SMTP connections from hosts that aren't typically expected to be running mail services.
H/T: Neil Schwartzman
The Russian Dial-up User List website is no longer to be found at dul.ru; when you visit that domain you find a simple Russian-language "this domain is for sale" page.
As of May 19, 2015, this domain seems to have been set to "wildcard" status in DNS. This means that DUL.ru is effectively "listing the world;" any site still using the DUL.ru DNSBL zone will reject all inbound mail until this DNSBL is removed from that mail server's configuration.
The Russian Dial-up User list appears to have been a dialup or dynamic blocking list. The intent of this type of anti-spam tool is usually to block SMTP connections from hosts that aren't typically expected to be running mail services.
H/T: Neil Schwartzman
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