When you experience a problem, the first thing you should do is check the log files for errors that might help in troubleshooting the issue. The log files are placed in different directories as follows:

DirectAdmin:

/var/log/directadmin/error.log
/var/log/directadmin/errortaskq.log
/var/log/directadmin/system.log
/var/log/directadmin/security.log

Apache:

/var/log/httpd/error_log
/var/log/httpd/access_log
/var/log/httpd/suexec_log
/var/log/httpd/fpexec_log
/var/log/httpd/domains/domain.com.error.log
/var/log/httpd/domains/domain.com.log
/var/log/messages (generic errors)

Proftpd:

/var/log/proftpd/access.log
/var/log/proftpd/auth.log
/var/log/messages (generic errors)

VM-POP3d:

/var/log/maillog
/var/log/messages

Named (BIND):

: /var/log/messages

exim:

/var/log/exim/mainlog
/var/log/exim/paniclog
/var/log/exim/processlog
/var/log/exim/rejectlog
(on FreeBSD, they have "exim_" in front of the filenames)

MySQL : (RedHat):

/var/lib/mysql/server.hostname .com.err

MySQL (FreeBSD):

/usr/local/mysql/data/server.hostname.com.err

crond:

/var/log/cron

To view a Exim mainlog log file, for example, run the following command:

less /var/log/exim/mainlog

If the log is too large you can use the "tail" command:

tail -n 30 /var/log/filename

Where 30 is the number of lines from the end you wish to view.

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