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I’ve been using Freshworks (free plan) for a few years to monitor various servers I manage for myself and for a few community organizations.

Beginning on the morning of October 4, I started receiving frequent, recurring alerts about multiple services. The only ones affected are running on ports 443 (HTTPS) and 993 (IMAPS). It appeared that those specific ports were suddenly bouncing up and down on multiple different servers, which is odd. Using other tools, I’ve been unable to find any evidence that those services are actually failing at all.

I’ve paused the affected monitors to silence the alerts with the hope that some transient issue would be resolved. But now, 8 days later, the problem persists.

Has anyone else observed this behavior? Any ideas what might be causing it?

Hello,
 

Since the issue seems to consistently affect ports 443 (HTTPS) and 993 (IMAPS) across multiple servers, a few possibilities come to mind:

  1. Firewall or rate-limiting rules: Some systems may temporarily block or throttle monitoring probes if they detect what looks like repetitive traffic. This could lead to false negatives, particularly on secure ports.

  2. TLS/SSL handshake issues: If there were recent changes to the SSL/TLS configuration on the servers or intermediate networks (e.g., expired certs, protocol support changes), it might trigger Freshworks monitors to interpret the connection as failed.

  3. Monitoring IP ranges: If your monitors rely on static IPs from Freshworks to connect, please ensure those IPs are allowlisted on your servers or network devices. A recent IP change on our end (if any) might affect connectivity.

  4. False positives or changes in the monitoring behavior: It’s possible a recent backend update might have altered how health checks are validated. We can escalate this for internal review if needed.

I’d recommend the following:

  • Check your firewall and server logs around the timestamps of the alerts to see if any connections are being rejected or throttled.

  • Review SSL/TLS settings or cert validity for the affected services.

If you still face issues, you can raise a support ticket with support@freshservice.com

Thanks for those suggestions. In this case, the problem resolved itself shortly after my original post. Fingers crossed, everything has been working as expected recently.

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