Blacklist Monitoring: Know When Your IP Gets Listed
A new monitor type queries 16 DNSBL, SURBL, and DBL zones automatically. If your IP or domain gets listed, you'll know within hours — not days.
Getting listed on an email blacklist can quietly destroy your delivery rates before anyone notices something is wrong. MyMonitor365 now offers a dedicated Blacklist Monitor type that automatically queries 16 of the most widely used DNSBL, SURBL, and DBL zones on your behalf.
When a listing is detected, the monitor transitions to DOWN and triggers all configured notifications — email, SMS, Slack, or any other integration your team uses. When the listing is removed, the monitor returns to UP and logs the incident with the duration.
Because blacklist checks are inherently different from ping and port checks — they query external DNS-based systems rather than your host directly — the minimum check interval is 4 hours. Available intervals are 4H, 1D, 1W, and 30D. This protects the reputation of the DNSBL services and avoids unnecessary query volume.
You can also ignore specific zones that are not relevant to your use case. If you know a particular zone produces false positives for your network, you can mark it ignored and it will no longer affect your monitor's status. Ignored zone counts are visible on the monitor list so you always have full context.
Blacklist monitors support all the same notification and integration options as other monitor types. They also appear on the dashboard and in the incident log, giving you a unified view of your infrastructure health alongside your ping and port checks.