Exim drops an error: "failed to open included configuration file /etc/exim.spamassassin.conf.":
2018-10-05 07:48:57 cwd=/usr/local/directadmin/custombuild 2 args: /usr/sbin/exim --version 2018-10-05 07:48:57 Exim configuration error in line 929 of /etc/exim.conf: failed to open included configuration file /etc/exim.spamassassin.conf 2018-10-05 07:48:57 cwd=/usr/local/directadmin/custombuild 2 args: /usr/sbin/exim --version 2018-10-05 07:48:57 Exim configuration error in line 929 of /etc/exim.conf: failed to open included configuration file /etc/exim.cagefs.pipe.conf
Here is a possible solution.
chmod 644 /etc/exim.cagefs.pipe.conf
chmod 644 /etc/exim.spamassassin.conf
But permissions might get reset back to 640 root:root after updating exim.conf and spamassassin by Directadmin. So you might need to control it every time, unless Directadmin developers suggest a permanent fix.