Martin:
> HI Wietse,
>
> yes, I'm afraid that's true, these are the contents of that old
> directory
All those binaries have mail_version=3.4.13, therefore none will work
Postfix 3.6 libraries.
> I assume there has been a kind of new configuration between old postfix
> version and the 3.6.4 one.
>
> Do you have a listing of the directory /usr/libexec/postfix of a clean
> install?
The file names have not changed between Postfix 3.4 and Postfix 3.5.
Maybe the foillowing command will bring clarity:
find / -name master
One of them should be from Postfix 3.6.
Wietse