My n8n is deployed on a Zeabur auto-generated domain: https://un8n.zeabur.app
Currently, the Telegram Bot webhook has been registered successfully, but the Telegram Bot API's getWebhookInfo keeps reporting:
last_error_message: SSL error {error:0A000086:SSL routines::certificate verify failed}
I have confirmed the following:
- The bot token is correct.
- The webhook can be deleted and re-registered successfully.
- The webhook URL correctly points to the n8n webhook path.
- However, Telegram still encounters SSL certificate verification failures when delivering the webhook.
I have also tested the HTTPS connection to un8n.zeabur.app using openssl. The handshake appears to succeed, but there are messages related to the certificate chain during the verification process. Therefore, I suspect there might be a compatibility issue with the TLS/certificate chain of the Zeabur auto-generated domain.
Could you please help check:
- Whether the full SSL certificate chain provided by un8n.zeabur.app is correct.
- Whether an intermediate certificate is missing from the chain.
- Whether the SSL certificate for this domain can be re-issued or re-configured.
- Whether there are any known issues with webhook verification failures for Zeabur auto-generated domains recently.
If needed, I can provide the response from Telegram's getWebhookInfo and the openssl test results.