Steve Campbell writes:

I use Centos and the default dovecot RPM. I seem to recall there was a way to determine if dovecot was built with "--with-libwrap". Can anyone shed light on how to determine this, please?

Maybe

dovecot  --build-options

Or you can just test it directly by denying a connection to a test host.

Joseph Tam <jtam.home@gmail.com>