Monthly Archives: December 2012

Delivering root mail locally while relaying others

In order to deliver some accounts locally, you can set up virtual aliases as follows: 1. Add the following line to /etc/postfix/main.cf: virtual_alias_maps = hash:/etc/postfix/virtual mail_spool_directory=/var/spool/mail 2. Create /etc/postfix/virtual as follows: root root@localhost 3. postmap /etc/postfix/virtual 4. Restart postfix Note: … Continue reading

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strace

strace -s 512 -f lsyncd -pidfile /etc/lsync.lua

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Checking whether a key and cert match using openssl

openssl rsa -noout -modulus -in server.key | openssl md5 openssl x509 -noout -modulus -in server.crt | openssl md5

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Using blackbox to change multiple dns records for account

browse to https://clouddns.dcx.rackspace.com/zones/search Enter the account number and click Exact Search copy the lines from the console to a file called domainlist.txt domainlist.txt=================== 1 View accidentlawyerny.net 2 View acnestories.com 3 View acnewonders.com 4 View aromatherapyrecipe.com 5 View attorneyny.us 6 View … Continue reading

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Make fail2ban send emails

Edit /etc/fail2ban/jail.conf as follows: action = %(action_)s gets changed to action = %(action_mw)s which causes fail2ban to execute an action shortcut that sends mail: #########section of jail.conf############################################ # Action shortcuts. To be used to define action parameter # The simplest … Continue reading

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Changing munin password

To change the serverinfo password for munin, htpasswd /etc/munin/munin-htpasswd serverinfo To test, go to http://IP/munin

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Adding usb device to qemu in kvm

HOWTO: Use USB devices in Virtual Machine Manager with QEMU

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Deny POST to a site in .htaccess

 <limit POST OPTIONS>   Order deny,allow   Deny from all  </limit>

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