rbl.iprange.net – False Positives & Disabled [update: re-enabled]

[January 2, 2018 – UPDATE] RBL has been re-enabled under the new name: rbl.realtimeblacklist.com All the false positives regarding this RBL should be cleared out of the system once your monitors will be automatically processed/checked again. [January 1, 2018] The ‘rbl.iprange.net’ RBL has started issuing false positives, showing every IP as being blacklisted. We have now […]

Read More

rbl.efnetrbl.org – removed [update: reinstated]

[October 15, 2017 – UPDATE] The RBL has now been reinstated after coming back online. [October 13, 2017] This RBL has been removed from our system, as it appears to be down for more than 24 hours. We’ll keep an eye on it, and if it ever comes back online we’ll consider re-adding it to […]

Read More

korea.services.net – removed

[October 11, 2017] This RBL has been removed from our system, as it appears to be down for more than 24 hours. We’ll keep an eye on it, and if it ever comes back online we’ll consider re-adding it to our platform.

Read More

15 Aug 2017 Outage

[August 15, 2017] Due to a hardware failure on a critical node, we’ve experienced an outage around 2 hours long on 15 Aug 2017. At 14:04 (UTC) our on-site techs were alerted that one critical server in our infrastructure was suffering an outage. Due to this server playing a critical role in our infrastructure, the […]

Read More

bl.spamcannibal.org – removed

[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.

Read More

[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 […]

Read More

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 […]

Read More

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 […]

Read More

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 […]

Read More

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 […]

Read More