Whops.. Hit enter too early. Please change Topic to: Can't send mail from Windows 10 Mail Client. It works fine from tunderbird, my phone etc.. When I use the mail client in windows 10 I get the following error in the log. Apr 26 15:53:16 server1 postfix/submission/smtpd[2837]: connect from server.com Apr 26 15:53:16 server1 postfix/submission/smtpd[2837]: SSL_accept error from server.com: -1 Apr 26 15:53:16 server1 postfix/submission/smtpd[2837]: warning: TLS library problem: error:1408A10B:SSL routines:SSL3_GET_CLIENT_HELLO:wrong version number:s3_srvr.c:956: Apr 26 15:53:16 server1 postfix/submission/smtpd[2837]: lost connection after STARTTLS from server.com
