On Fri, Jul 11, 2014 at 08:38:00PM +0000, Alona Rossen wrote: > Our C++ application uses libcurl 7.21.0 linked to openssl-1.0.0m to implement > a > variety of functionalities, including SMTP mail transfer. > > The application runs on numerous platforms of different versions, including > Windows, Solaris 10/11 SPARC, Solaris 10/11 Intel, AIX6.1/7.1, different > flavors and versions of Linux. > > We set up a test scenario in which we send an email using the same email > server > and account, utilizing TLSv1, SSLv2, SSLv3 protocols. > > The scenario successfully sends an email via any SSL protocol from any client > platform, with the exception of Solaris 10 SPARC, where TLSv1 and SSLv2 fail > with the following error message: [...] > INFO_TEXT: > Unknown SSL protocol error in connection to our-server.com:<port>
Have you tried with the latest version of libcurl? There have been lots of SSL fixes and even more mail fixes in the 4 years since 7.21.0 was released. Have you read https://github.com/bagder/curl/blob/master/docs/SSL-PROBLEMS ? >>> Dan ------------------------------------------------------------------- List admin: http://cool.haxx.se/list/listinfo/curl-library Etiquette: http://curl.haxx.se/mail/etiquette.html