By default, an AIX system will not do syslog'ging. For a strange reason, the default install on an AIX install will not place entry's in /etc/syslog.conf, leaving a totl userless syslogd.

Even more, comparing the syslogd on AIX to another Unix, (ex: Linux), you will notice that <facility>.* doesn't work. So make sure that your priority level is never *.

Comming from a Linux world, you most probably want the following config:

mail.debug      /var/log/mail
user.debug      /var/log/user
kern.debug      /var/log/kern
syslog.debug    /var/log/syslog
daemon.debug    /var/log/daemon
auth.debug      /var/log/secure
local2.debug    /var/log/sudo

As AIX standard has no logrotate daemon running, you want to adapt syslogd todo the rotating on his own, an example would be:

mail.debug   /var/log/mail  rotate size 100k files 4		# 4 files, 100kB each
user.debug   /var/log/user  rotate files 12 time 1m		# 12 files, monthly rotate
kern.debug   /var/log/kern  rotate files 12 time 1m compress	# 12 files, monthly rotate, compress
...

When adaptions are made to /etc/syslog.conf, make sure to restart syslogd.

[root@sys /] refresh -s syslogd
0513-095 The request for subsystem refresh was completed successfully.
[root@sys /]