utf-8 issue?

Hi

I have 4 different mail hubs, all running latest debian

ii  perl                           5.24.1-3+deb9u2                i386 
       Larry Wall's Practical Extraction and Report Language
ii  mimedefang                     2.79-2                         i386 
       e-mail filter program for sendmail

Recently I am seeing alot of the following errors

Error from multiplexor: ERR No response from slave
Reap: slave 1 (pid 15022) exited normally with status 22 (SLAVE DIED 
UNEXPECTEDLY)

The above are logged in mail.err and are related to the following in 
mail.log which rejects the email with a "try again later" message until 
the email eveentually bounces after 5 days.

stderr: open body: Invalid argument at /usr/share/perl5/MIME/Entity.pm 
line 1878.

A google search shows this topic


https://lists.roaringpenguin.com/pipermail/mimedefang/2013-February/036880.html


But I am not doing anything with MIME::Entity; and the filter is pretty 
much the stock microsoft mimedefang-filter and this does seem to be 
related from the upgrade from Debian Jessie to Stretch, does anyone have 
any pointers?

-- 
Thank you,

Mark Adrian Coetser
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