[August 5, 2017] The ‘bl.spamcannibal.org’ RBL has been offline for more than 24 hours, so we’ve removed it from our system. We will keep monitoring the situation, and if/when they come back online, we’ll re-add the RBL to the checked blacklists.
Category: 16.01 Incidents
[06.06.2017] False Positive Incident
[June 6, 2017] Due to a glitch in our development code, that got pushed into the production environment, our platform has sent out some false positive blacklist monitoring notifications regarding a RBL that is not yet ready for production, nor was it supposed to be live at this time. The incident has caused a small […]
junkemailfilter.com possible false positive alerts
[June 18, 2017 – UPDATE] The situation seems to have been fixed on their side. [May 8, 2017] We’ve noticed a wave of false positives coming from the junkemailfilter.com RBLs. After some investigation we’ve determined that their nameservers may not be properly synced, since they seem to be giving out mixed signals. Test case: let’s take the […]
rfc-clueless.org – website false positives
[March 2, 2017] We’ve been receiving a high number of complaints lately, about rfc-clueless.org and the fact that their website shows some domains/hostnames as not blacklisted, while our platform shows them as blacklisted. Our platform queries these blacklists, like any email server does, via DNS queries, and the DNS queries show the checked domains/hostnames as being […]
rbl.efnetrbl.org – false positive & removed [update: re-added]
[January 15, 2017 – UPDATE] The RBL seems to be fully working again, so we’ve re-added it to our system. [January 8, 2017] rbl.efnetrbl.org started issuing false positives, due to what appears to have been their domain expiring. We’ve removed this RBL from being checked by our platform, until they get their site and RBL […]
rbl.megarbl.net – false positive & removed [update: reinstated]
[November 29, 2016 – UPDATE] It appears they have renewed their domain name and the RBL is back online, fully functional. We’ve reinstated it into our monitoring system. [November 25, 2016] MegaRBL’s domain name has just expired, and due to DNS changes (for a short while) they blacklisted the world (aka: blacklisted all IPs). These […]
rbl.interserver.net – issuing false positives & removed
[April 7, 2016 – UPDATE] We’ve reset the weekly manual blacklist check count for all the accounts, so you can now force a re-check of all of your IPs in order to correct the false positives caused by this RBL. More info on this feature here:https://docs.hetrixtools.com/initiate-manual-blacklist-check/ This is just an optional step you can take […]
dnsbl.webequipped.com – Removed
[February 26, 2016] dnsbl.webequipped.com RBL was giving out inaccurate responses and we decided to remove it from our checked blacklists.
lookup.dnsbl.iip.lu – false positive & removed
[February 9, 2016] lookup.dnsbl.iip.lu blacklist started issuing false positive responses and upon further investigation looks to be abandoned/dead. We have removed it from our system. We’ve caught this quite early, however some IPs have still been marked as listed here, if you receive a notification regarding this RBL you can safely ignore it, as it […]
Barracudacentral Some False Positives
[January 13, 2016 – UPDATE] We’ve noticed yet another wave of false positive listings on these two RBLs. Their nameservers were stating that some IPs were listed in their database, but when checking on their website turned out they weren’t. [December 16, 2015] Barracudacentral’s nameservers have started issuing some false positive results. As always when […]