connection is using TLS; with cutthrough connections this is quite likely.
JH/16 Fix ARC verification to do AS checks in reverse order.
-JH/16 Support a "tls" option on the ${readsocket } expansion item.
+
+JH/17 Support a "tls" option on the ${readsocket } expansion item.
+
+JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
+ using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
+ Previously the "utf8" would be re-prepended for every additional message.
Exim version 4.91