Amavisd fails to start. Missing UNIX::Syslog??

[Stephen Davies]

Since running dnf update earlier today, amavisd has stopped working.
The systemctl status reads:

amavisd.service - Amavisd-new is an interface between MTA and content checkers.
    Loaded: loaded (/usr/lib/systemd/system/amavisd.service; enabled; vendor 
preset: disabled)
    Active: failed (Result: start-limit) since Tue 2016-03-15 16:33:46 ACDT; 
8s ago
      Docs: http://www.ijs.si/software/amavisd/#doc
   Process: 31643 ExecStart=/usr/sbin/amavisd -c /etc/amavisd/amavisd.conf 
(code=exited, status=255)

Mar 15 16:33:46 mustang.sdc.com.au systemd[1]: Unit amavisd.service entered 
failed state.
Mar 15 16:33:46 mustang.sdc.com.au systemd[1]: amavisd.service failed.
Mar 15 16:33:46 mustang.sdc.com.au systemd[1]: amavisd.service holdoff time 
over, scheduling restart.
Mar 15 16:33:46 mustang.sdc.com.au systemd[1]: start request repeated too 
quickly for amavisd.service
Mar 15 16:33:46 mustang.sdc.com.au systemd[1]: Failed to start Amavisd-new is 
an interface between MTA and content checkers..
Mar 15 16:33:46 mustang.sdc.com.au systemd[1]: Unit amavisd.service entered 
failed state.
Mar 15 16:33:46 mustang.sdc.com.au systemd[1]: amavisd.service failed.

and if I try to start it manually, I get:

/usr/sbin/amavisd -c /etc/amavisd/amavisd.conf
fetch_modules: error loading required module Unix/Syslog.pm:
   Can't load '/usr/local/lib64/perl5/auto/Unix/Syslog/Syslog.so' for module 
Unix::Syslog: libperl.so.5.18: cannot open shared object file: No such file or 
directory at /usr/lib64/perl5/DynaLoader.pm line 193.
    at /usr/sbin/amavisd line 209.
   Compilation failed in require at /usr/sbin/amavisd line 209.
ERROR: MISSING REQUIRED BASIC MODULES:
   Unix::Syslog
BEGIN failed--compilation aborted at /usr/sbin/amavisd line 249.

UNIX::Syslog is installed and 
/usr/local/lib64/perl5/auto/Unix/Syslog/Syslog.so exists.

Amavis has been running successfully on this box for years so I can only blame 
the update.
Any ideas as to what got broken??

Cheers and thanks,
Stephen
-- 
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Stephen Davies Consulting P/L                             Phone: 08-8177 1595
Adelaide, South Australia.                                Mobile:040 304 0583