Comment # 6 on bug 1086807 from Peter Varkoly

Normaly /usr/lib/postfix/postfix-ldap.so will not be checked because it is in a
separate package: postfix-ldap. Thats why postfix-ldap.so is commented out in
/usr/lib/postfix/postfix-files:

...
$shlib_directory/libpostfix-master.so:f:root:-:755
#$shlib_directory/postfix-ldap.so:f:root:-:755
$shlib_directory/postfix-lmdb.so:f:root:-:755
...

I'ev tested it on a lot of installations and I could not reproduce the problem.
Please check the content of /usr/lib/postfix/postfix-files and
/usr/lib/postfix/postfix-files.d/. Furthermore check the value of
shlib_directory. This should be:

postconf shlib_directory
shlib_directory = /usr/lib/postfix