Category Archives: System Admin
Retrieving multiple mail accounts’ info on Plesk
Try the command-line utilities: # /usr/local/psa/bin/mail -i user@example.com
Hosting Quotas Gotcha
I am really liking Virtualmin, but just got bitten, hard, by an unexplained problem. Postfix started rejecting incoming mail, saying in the logfile (/var/log/maillog) status=bounced (can’t create user output file) Well after much gnashing of teeth, it turns out that … Continue reading
Setting up Virtualmin on Centos with a Linode
Once you know these few steps, setting up a LAMP (Linux/Apache/MySQL/Perl-PHP) server on a Linode (please use that link, as it includes my referral code) is insanely simple: First, starting with a freshly provisioned CentOS install, ssh into the root … Continue reading
cPanel ports
http://www.yourdomain.com:2082 cPanel https://www.yourdomain.com:2083 cPanel ssl http://www.yourdomain.com:2086 WHM https://www.yourdomain.com:2087 WHM ssl http://www.yourdomain.com:2095 webmail https://www.yourdomain.com:2096 webmail ssl
Postfix as mail relay for Exchange
Taken from http://www-personal.umich.edu/~malth/gaptuning/postfix/ however note that the “your_recipients” file in the postfix main.cf, the “plusone_recipients” in the cron job, and the “example_recipients” in the Perl file should probably all be the same. — wl 200808 This method consists of a … Continue reading
Installing Horde with Virtualmin on Centos 5.x
CentOS specific instructions found here; Also see the general Horde install document. Tested on CentOS 5.1, 5.2, 5.3. CentOS + Virtualmin Walk-through Tutorial With Centos 5.x and a Webmin/Virtualmin installation you’ll do things this way: # yum install horde imp … Continue reading
Network Installation of CentOS 5.2
I’m moving my internal server to new hardware and wanting to load CentOS 5.2 … without downloading a half dozen CDs or a 4+GB DVD image… half of which I probably won’t need, or which will be replaced by updates … Continue reading
Installing webmin on Centos 5.x
For CentOS 5.1 — First we install some dependencies. (This is already present on CentOS 5.2 and CentOS 5.3.) yum -y install perl-Net-SSLeay step 1: webmin Install the system, using the link at http://www.webmin.com/download.html cd /usr/src wget http://superb-east.dl.sourceforge.net/sourceforge/webadmin/webmin-1.450-1.noarch.rpm rpm -i … Continue reading
Disabling root login via SSH (CentOS)
This specifically applies to Centos 5.x # vi /etc/ssh/sshd_config Preferably do this on a second login if you have to do this on a remote system… and keep the one of them open! All you have to do is locate … Continue reading
Refresher on NFS exporting
on the server, in /etc/exports: /home/somedirectory 192.168.1.0/24(no_root_squash,rw,nohide) then after editing /etc/exports, refresh the NFS server with: # /sbin/exportfs -a