SSL & Domain Expiration
SSL Certificate Expiration
Section titled “SSL Certificate Expiration”Bleemeo automatically checks the expiration date of SSL certificates on all HTTPS monitors.
Alert thresholds are calculated as a percentage of the certificate’s lifespan, adapting automatically to both short-lived and long-lived certificates. Two threshold profiles are used depending on the certificate’s total lifespan:
Certificates valid for 120 days or more
Section titled “Certificates valid for 120 days or more”Applies to most commercial certificates, including the new 200-day standard.
| Level | Threshold | Example: 200-day certificate |
|---|---|---|
| Warning | 8% of lifespan remaining | ~16 days before expiry |
| Critical | 4% of lifespan remaining | ~8 days before expiry |
Certificates valid for less than 120 days
Section titled “Certificates valid for less than 120 days”Applies to short-lived certificates such as those issued by Let’s Encrypt (90 days).
| Level | Threshold | Example: 90-day certificate |
|---|---|---|
| Warning | 30% of lifespan remaining | ~27 days before expiry |
| Critical | 15% of lifespan remaining | ~14 days before expiry |
Short-lived certificates use higher percentages because their renewal window is tighter — a 90-day certificate at 8% would only leave about 7 days, which may not be enough to react.
These alerts appear in the Status Dashboard and can trigger notifications via your configured notification targets.
Domain Name Expiration
Section titled “Domain Name Expiration”Bleemeo checks the expiration date of the domain name associated with each monitor using WHOIS. This check runs once a day, so the status may take up to 24 hours to update. The expiration date is only available if the WHOIS response includes it, which is not the case for all domain extensions.
| Level | Threshold |
|---|---|
| Warning | Domain expires in less than 20 days |
| Critical | Domain expires in less than 10 days |
These alerts also appear in the Status Dashboard and can trigger notifications.