Hi I wanted to file a similar bug...
What worked for me was regenerating the certificate and key (though I put them in the same file) after upgrading to stunnel4. I hope this helps. Cheers Luk -- Luk Claes - http://people.debian.org/~luk - GPG key 1024D/9B7C328D Fingerprint: D5AF 25FB 316B 53BB 08E7 F999 E544 DE07 9B7C 328D
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