PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
+PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
+ advertise SMTP AUTH mechanism to us, instead of a generic
+ protocol violation error. Also, make Exim more robust to bad
+ data from the Dovecot auth socket.
+
Exim version 4.80.1
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