>>> Fri Dec 9 >>> Gil Bahat gil at magisto.com wrote: Here's to that. I have not heard of Spamcannibal as an effective BL.
However, I have had issues from personal experience with listings involved in this BL, and the IP address (206.41.40.249) which is apparently permanently listed. My experience calls me to describe Spamcannibal as a "Nightmare RBL" for sane mail operators, which I would strongly suggest nobody implement on their mail server the Tarpitting Spamcannibal suggests, But in short, if you're listed, apparently it's not the end of the world, and so far it seems like nobody actually uses the list. ...... Above IP is Permanently listed because of a single spam message logged in November 2015 resulting from one security-breach incident on which occured involving an end user's account on a downstream mail server (SMTP account password stolen through phishing, and then promptly abused by spammers) --- apparently Spamcannibal's lookup tool actually shows the actual E-mail message as well. The actual outgoing spam situation was dealt with swiftly. No other RBL listings occurred which we became aware of, other than the Spamcannibal listing.... We sent a BL removal request, mentioned the details, and explained that was a spam issue we resolved by suspending customer e-mail accounts, deleting queued messages, and referring the customer to be Re-educated by support about internet security and account passwords. The BL maintainer seemed to demand a complete technical rundown of our ISP's entire E-mail service infrastructure, and ultimately declined to delist, because that message contained a [Spam] mark added in front of the subject line --- one of our internal filters' special subject prepends for suspected spam (We do not like subject prepends, however, it was in-fact a legacy environment). We had a long drawn-out e-mail thread with the maintainer of Spamcannibal to request simple delisting. The BL maintainer was insistent that our mail server must be broken if any e-mail message could ever have gone through containing the word 'Spam' in the subject. Despite our best efforts in resolving all potential spam complaints, we were completely unable to negotiate removal from the Spamcannibal BL..... They were totally unwilling to reason with us or provide anything further. Also, we ultimately discovered that the BL listing was not causing the mail deliverability problems that brought this BL listing to our attention. *The BL listing was apparently being discovered by an end customer by performing a "blacklist search" against our IP address, using tools such as MXToolbox, The user found the blacklisting through the 3rd party tool, and then apparently assumed since "Spamcannibal showed listed", that it must be causing issues, & our mail server must be broken. For some reason, they were able to report the Blacklisting to us as a service issue, instead of the actual mail problems they were experiencing. Problems turned out to be with recipient's mail server, unrelated to the listing. IP Address continues to be listed by Spamcannibal, and none, hundreds of thousands of legitimate messages are delivered fine per day, No reported issues since then have implicated this BL.... So unless Yahoo is using them to decide on 4xx deferrals, I would say that particular BL listing is without any affect whatsoever. > That is correct. At least from my personal perspective, the solution was to > find out if any major destination was making decisions based on this list. > >--- > After engaging that sole meaningful provider, I'm happy to report they > dropped spamcannibal. So unless someone picked it up, you can likely safely > ignore any spamcannibal listing. -- -JH _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
