Linux and Unix host Command Examples

in Categories , , last updated May 16, 2017
host-command

I am a new Linux and command line user. How do I use host command line utility to verify DNS settings on Linux and Unix-like operating systems? How do I use dig command to find the IP address of a host name or host Name of an IP address?

Google Apps Domain Create SPF Records For BIND or Djbdns

in Categories , last updated October 22, 2010

I work for a small business and outsourced our email hosting to Google. However, I noticed that spammers are using our From: First Last to send their spam messages. All bounced messages come to our catch only account. How do I stop this? How do I validate our domain using SPF? How do I configure a SPF for Google Apps domain using BIND 9 or djbdns?