Does it make any difference if mutt is compiled with '--with-gnutls' enabled or with '--with-openssl' enabled. Mutt (Fed20/21/Rawhide package) shows that '--with-gnutls' is used. I ask because I have no problem connecting to my ISP Ziggo with mutt when using Fedora. With the following in .muttrc: set ssl_starttls = yes set smtp_url = "smtp://volovics@xxxxxxxx@smtp.ziggo.nl:587 the TLS connection is established successfully and I am asked to accept the certificate. Everything works OK from then on. But this does not work on a MacBook Pro with OsX Yosemite. I use the Homebrew mutt. This mutt is compiled with '--with-openssl', linked to 'openssl-1.0.1j'. Using the same .muttrc file I use in fedora the TLS connection 'aborts' and I get the error message: "SSL failed, I/O error. Could not negotiate TLS connection". The openssl-1.0.1j from Homebrew seems to be the same as in Fedora Rawhide though I have not checked all the patches. (Of course mutt in Fedora is compiled with gcc and the Homebrew mutt with LLVM Clang. Ziggo seems to be using TLSv1) AV -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org