undeliverable tagged incorrectly

Alex <[email protected]>
Newsgroups gmane.mail.spam.spamassassin.general
Message-ID <CAB1R3sjftjH9BqVSF3wFuqiiUMH9JKNwyXNvpSFhW35c8BAX0Q@mail.gmail.com>
Hi,

I have spamassassin-4 with amavisd set up and have a message that hit
mailspike and a few others that pushed it over my 5 point threshold. Can
someone help me understand why this was not properly identified as a bounce
message?

https://pastebin.com/mc4zgp7S

Usually they hit ANY_BOUNCE_MESSAGE based on the empty envelope sender, so
I'm not sure what's wrong.
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