In this example, we’re asking Claude to investigate today’s blacklisting for one of our IPs. It correctly identifies that the issue is a relapse and that our remediation for this server was not properly done before, so the IP got blacklisted again.
Articles Tagged: blacklist monitor
Pull the recent blacklisting status for a specific RBL
In the example below, we’re asking Claude to quickly give us a report of the last 7 days blacklisings on the Spamhaus RBLs.
Check Blacklisting Status
The Problem You want to quickly check an IP block and its history blacklisting status to see if you notice any patterns or issues you should be fixing. The manual way would be to open up each blacklisting report and try to figure out which blacklists keep re-listing you. The MCP Solution Just ask your […]
Connected, but no SMTP banner received within Xs
This Uptime Monitoring error appears in your Location Fail Log when you are using an SMTP monitor and our monitoring node was able to successfully open a TCP connection to your mail server, but the server did not send its initial SMTP greeting (the 220 banner) within X seconds. When a mail client connects to an SMTP […]
Microsoft SNDS Changes [July 2026]
[8 July 2026] Microsoft has decided that the regular SNDS Access Keys will now expire every 30 days. This will require anyone using the Microsoft SNDS Access Keys on our platform to manually renew them every 30 days, which is, of course, tedious and not ideal. Furthermore, due to poor design, the old Microsoft API […]
Configure Microsoft SNDS Monitoring
This guide will explain how to connect your Microsoft SNDS account to the HetrixTools platform so you can have your SNDS IPs monitored by our Blacklist Monitoring service. [ Direct link to this setting in your account: https://hetrixtools.com/dashboard/account/settings/blacklist-monitor/#blmon-snds-monitoring ] Start by going to your ‘Account Settings’ from the drop-down menu when clicking your name in […]
Blacklist Monitors – Summary
In this guide, we’ll go over how to create and access a quick summary of your overall blacklisting status, showing each RBL where your IPs and domains are blacklisted and the blacklisting count for each of them. To get started, head on to your Blacklist Monitors dashboard from the client area menu. Towards the top-right […]
Hourly/Daily/Weekly/Monthly Blacklist Monitoring Reports for Status Pages
You can configure to receive Blacklist Monitoring Reports via email hourly, daily, weekly, or monthly for all of the Blacklist Monitors included in any of your Status Pages. Pre-requisite: You must have created a Blacklist Monitoring Status Page before following this guide. To get started, go to your Status Pages dashboard from the client area menu: Then, […]
SIGNL4 Integration
If you’d like to start receiving our notifications in your SIGNL4 account, please follow the setup guide below. Start by heading to your SIGNL4 dashboard, and click on the “Integrations” link from the side menu: Then, on your Integration panel, click on the “Installed” button to view your installed integrations: Now, on the page containing […]
bl.score.senderscore.com – Disabled
[April 16, 2025] We’ve had to remove this blacklist from our system, as their new license pricing is much higher than the industry standards and than we can afford. Only 0.15% of our total monitored blacklist monitors were actually blacklisted on this RBL. We will no longer be monitoring this RBL for blacklisting status.