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SMTPClient on PB22 R2 not support SSL/TLS with port 465?
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  2. How-to
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  1. Vinicius Stenzel
  2. PowerBuilder
  3. Thursday, 26 June 2025 05:03 PM UTC

Hi,

I’ve been testing the SMTPClient object in PowerBuilder 2022 R2, and I believe it does not support implicit SSL/TLS connections over port 465.

After extensive testing with multiple configurations, the results are always the same — the connection times out. Here's a sample log:

 
Trying 192.168.185.37:465...
Connected to mx.solanum-shoes.com.cn (192.168.185.37) port 465
Operation timed out after 10001 milliseconds with 0 bytes received
Closing connection
Closing connection
Error Info: Operation timeout.

If I try the same SMTP server with other libraries such as ASP_MAIL or PBNISTMP, using SSL/TLS, the message is sent successfully.

The mail server logs indicate that it is waiting for the SSL/TLS handshake. I’ve tested with:

  • IgnoreServerCertificate = true

  • Installing the certificate in the root trust store

Still no success.

So I’d like to confirm:

  • Is implicit SSL/TLS (port 465) officially supported by SMTPClient in PB 2022 R2?

  • If not, is this planned for a future release?

Thanks in advance for your help.

Best regards,

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