Mail server monitoring
- Reverse DNS resolution/uptime monitoring - provides alerts when RDNS unresolved
- Monitoring reverse DNS record against accidentally or malicious changes - provides alerts when RDNS changed
- Host name or domain name resolution monitoring
- TCP port (25, 465, 587, 443, 80) uptime monitoring
- Monitoring from multiple locations
You can chose region to monitor from and number of failures before sending an alert.