IPv6 outbound SMTP check fails: port25check.cloudron.io refuses connection, Gmail succeeds
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Cloudron reports IPv6 outbound port 25 as blocked. However, connections to gmail-smtp-in.l.google.com:25 succeed over IPv6 from both the VPS and the mail container.
The configured check endpoint, port25check.cloudron.io (2604:a880:800:10::b66:f001), returns “Connection refused” on port 25.
Could you verify the IPv6 check endpoint? -
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N nebulon has marked this topic as solved
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Thanks, @nebulon! I’ve refreshed the checks and everything is green now. Appreciate the quick fix!
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