Comment # 12 on bug 1207963 from Michael Hamilton

(In reply to Yasuhiko Kamata from comment #11)
> Thanks again for testing.
> 
> As a side note, the "TLS" setting in kmail means to use STARTTLS command.
> This is specified at RFC-2595 (POP3) and RFC-3207 (SMTP).
> 
> https://www.rfc-editor.org/rfc/rfc2595.html
> https://www.rfc-editor.org/rfc/rfc3207.html
> 
> You can use STARTTLS them with:
>  openssl s_client -starttls pop3 -connect pop.actrix.co.nz:110
>  openssl s_client -starttls smtp -connect smtp.actrix.co.nz:587
> 
> In a (normal) SSL connection, encryption is performed from the beginning of
> the connection.
> But in a STARTTLS ("TLS") connection, encryption is performed only AFTER the
> "STARTTLS" command.

Thanks for the clarification. The two options make a lot more sense now.  So
kmail3 should work with port 110 and TLS (STARTTLS) - that explains why it used
to work.