disable bad header checks ?

[lists at sbt.net.au]

long time installation of amavisd-new
noticed some inbound emails ends in my badh inbasket

how do I disable bad header checks ?
the few emails in badh inbasket all genuine, so I think I don't really
need it ?

thanks for any pointers

-------------------------------
Delivered-To: vvv+badh at sbt.net.au
Received: from localhost (localhost [127.0.0.1])
     by xyz.sbt.net.au (Postfix) with ESMTP id 041C84115D4F
     for <vvv+badh at sbt.net.au>; Fri, 29 Oct 2021 10:41:31 +1100 (AEDT)
X-Quarantine-ID: <T50Ng-NsRPCp>
X-Virus-Scanned: amavisd-new at sbt.net.au
X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "MIME-Version"
Received: from xyz.sbt.net.au ([127.0.0.1])
     by localhost (xyz.sbt.net.au [127.0.0.1]) (amavisd-new, port 10024)
     with ESMTP id T50Ng-NsRPCp for <vvv at sbt.net.au>;
     Fri, 29 Oct 2021 10:41:29 +1100 (AEDT)


# amavisd -V
amavisd-new-2.12.1 (20201113)