OS/2, eCS & ArcaOS - Technical > Applications

pmMail and TLS 1.2

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Martin Vieregg:
My E-Mail provider sent me an E-Mail some weeks ago that TLS 1.0 and TLS 1.1 is no more supported in the future. Since yesterday, I cannot receive mails anymore with the current pmMail 3.24 version. Sending E-Mails is still working.

I get the very helpful account error message


--- Code: ---Error: Error 0
--- End code ---

I do not find any content about TLS in the pmMail documentation.

The more detailed query in english language is here:
https://www.os2.org/viewtopic.php?p=20613#p20613

Sean Casey:
Stunnel, which is provided with PMMail, supports TLSv1.3 tunneling.  Look for the readme in your \PMMail\BIN\Stunnel directory.  Would TLSv1.3 work with your provider?

Martin Vieregg:
Thank you for your hints. I added the following to my stunne.conf:


--- Code: ---;TLS Version (Strato since 7/2021)
sslVersion = TLSv1.2

--- End code ---

The first trial failed, because in the General Settings of pmMail 3.24, page Secure Transfer, there was still an old stunnel.exe version selected.

Then I realized that if no sslVersion switch is selected, the new stunnel.exe version also works. It seems that it select TLS 1.2 as default.

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