From my different testings, here is a table for
Windows Eudora:
> Latest version of Eudora tested: [Version 5.2.0.9]
>
> Eudora for MS-Windows:
>
> Supports STARTTLS Command on port 25: Yes
> Supports STARTTLS Command other ports: Yes
> Supports TLS in wrapper mode on port 25: Yes
> Supports TLS in wrapper mode on other ports: Yes
> Supports AUTH type PLAIN on a non-TLS connection: Yes
> Supports AUTH type PLAIN after STARTTLS connection: No
> Supports AUTH type PLAIN over wrapper mode TLS connection: No
> Supports AUTH type LOGIN on a non-TLS connection: No
> Supports AUTH type LOGIN after STARTTLS connection: No
> Supports AUTH type LOGIN over wrapper mode TLS connection: No
