Merge branch 'callout_auth'

diff --cc doc/doc-docbook/spec.xfpt
Simple merge

diff --cc test/stderr/5420
index e711184f5c33bd20cb1658a63da30556d1aec180,e711184f5c33bd20cb1658a63da30556d1aec180..1e4de9688b35756d7f84b869c1cc1c3b86e078a5
--- 1/test/stderr/5420
--- 2/test/stderr/5420
+++ b/test/stderr/5420
@@@ -86,6 -86,6 +86,7 @@@ expanding: ${if eq {$address_data}{user
           250-8BITMIME
           250-PIPELINING
           250 HELP
++127.0.0.1 in hosts_require_auth? no (option unset)
    SMTP>> MAIL FROM:<CALLER@myhost.test.ex>
    SMTP<< 250 OK
    SMTP>> RCPT TO:<userx@domain.com>
@@@ -218,6 -218,6 +219,7 @@@ skipping: result is not use
  expanding: ${if eq {$address_data}{usery}{*}{:}}
     result: *
  127.0.0.1 in hosts_avoid_tls? yes (matched "*")
++127.0.0.1 in hosts_require_auth? no (option unset)
    SMTP>> MAIL FROM:<CALLER@myhost.test.ex>
    SMTP<< 250 OK
    SMTP>> RCPT TO:<usery@domain.com>
@@@ -350,6 -350,6 +352,7 @@@ skipping: result is not use
  expanding: ${if eq {$address_data}{usery}{*}{:}}
     result: *
  127.0.0.1 in hosts_avoid_tls? yes (matched "*")
++127.0.0.1 in hosts_require_auth? no (option unset)
    SMTP>> MAIL FROM:<CALLER@myhost.test.ex>
    SMTP<< 250 OK
    SMTP>> RCPT TO:<usery@domain.com>