SMTP Error: Could not connect to SMTP host

Hello everyone,

I am experiencing some issues with my CyberPanel and would greatly appreciate any help or suggestions that the community may have.

Firstly, I am seeing some suspicious activity in my Postfix logs, which I suspect may be a possible attack. The logs show failed authentication attempts from multiple unknown IP addresses

Has anyone else experienced similar activity, and if so, what measures did you take to address it?

Secondly, I am encountering an error when attempting to send emails via SMTP. The error message states “SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed”. I have checked my SSL certificate and it appears to be valid. Any suggestions on how to resolve this issue would be greatly appreciated.

Thank you in advance for any assistance you can provide.

1 Like

I have the same issues here any admin that can resolve this problem?