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Good Evening Invision Power Board,

Im looking for additional information for this error code for SMTP email sending.

4C143/1 Connection refused

My Website is behind cloudflare, The port in question is Open, and I have triple checked the Credentials.

May I please have some insight on what this error code means, so that I cans see which end I have to fix.

 

It's the SMTP server side.

  • Community Expert
 

May I please have some insight on what this error code means, so that I cans see which end I have to fix.

 

You’ll want to contact your SMTP provider for assistance as that is coming directly from them. 

  • Author
 

You’ll want to contact your SMTP provider for assistance as that is coming directly from them. 

 

 

It's the SMTP server side.

Thank you for your replies. I have switched over to icloud to do SMTP. But all three options SSL, TLS, and plaintext still gives me the same connection error code.

Is there something special I have to do with certificates or something?

  • Author
 

You can’t use your normal iCloud password. You need to use an app specific password. 

https://support.apple.com/en-us/102654

Thank you, but i have already tried this as well with the same error code. I switched to outlook now with the same error code.

Is there a server setting i should check for this?