Advo wrote:
am now getting messages like:
>
> Oct 4 15:46:48 localhost postfix/smtp[21847]: warning: connect #1 to
> subsystem private/scache: No such file or directory

It looks like the "scache" feature is missing from the master.cf
file, and/or the scache directories missing.

Try running these command as the super-user:

postfix stop
/etc/postfix/post-install upgrade-package
postfix start

post-intall is a shell script that adds any missing
entries to master.cf that are required by newer versions
of Postfix, and it also adds any missing directories,
and makes sure their permissions are set correctly.

--
Greg