https://sylpheed.sraoss.jp/redmine/issues/306

Author: Antonio Ospite <ao2@ao2.it>

--- a/libsylph/ssl.c
+++ b/libsylph/ssl.c
@@ -262,6 +262,10 @@ gboolean ssl_init_socket_with_method(SockInfo *sockinfo, SSLMethod method)
 		return FALSE;
 	}
 
+#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
+	SSL_set_tlsext_host_name(sockinfo->ssl, sockinfo->hostname);
+#endif
+
 	SSL_set_fd(sockinfo->ssl, sockinfo->sock);
 	while ((ret = SSL_connect(sockinfo->ssl)) != 1) {
 		err = SSL_get_error(sockinfo->ssl, ret);