Email sending on Windows 7: SSL Exception: The function requested is not supported

[erl987]

Affected version

PersonalFME 1.0.0

Operating system

Windows 7

Problem

When sending emails under Windows 7 using the provider GMX, the following error is occurring (and email sending is not working):

SSL Exception: Error during handshake: The function requested is not supported

[erl987]

Probable reason

Under Windows, PersonalFME is using SChannel (the Windows implementation of SSL/TLS). Windows 7 had end of support on 14-01-2020. Apparently, the GMX server is requiring SSL/TLS features that are not supported by SChannel on Windows 7. The does probably affect other email servers as well.

Actions

OpenSSL cannot be used by PersonalFME under Windows due to license constraints. Windows 7 will be removed from the list of supported OS in the next release of PersonalFME.

[erl987]

This will be fixed in PersonalFME 1.0.1. It works even under Windows 7, even though this is no longer officially supported by PersonalFME.