1. New options for the ratelimit ACL condition: /count= and /unique=.
The /noupdate option has been replaced by a /readonly option.
+ 2. The SMTP transport's protocol option may now be set to "smtps", to
+ use SSL-on-connect outbound.
+
+ 3. New variable $av_failed, set true if the AV scanner deferred; ie, when
+ there is a problem talking to the AV scanner, or the AV scanner running.
+
Version 4.76
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