Improving Google Apps generated emails

USE SPF:

Add the following TXT record in your domain’s DNS Manager:

v=spf1 a mx include:_spf.google.com ~all

You can leave the hostname field blank. If your DNS manager isn’t letting you leave it blank, put “@” in that field without quotes.

USE DKIM:

  • Go to https://www.google.com/a/cpanel/example.com/
  • Go to Advanced Tools > Authenticate email > Set up email authentication (DKIM)
  • Generate new DKIM key and place it as a TXT record in your DNS manager.
  • Wait for few hours for DNS propagation and verify the DKIM keys in your Google Apps Cpanel.

Google’s definition to SPF and DKIM:

  1. SPF record: An SPF record is a list of IP addresses that are authorized to send mail for a particular domain. For more information on how to publish an SPF record, please visit http://www.openspf.net.
  2. DKIM: DKIM (DomainKeys Identified Mail) is a way to digitally sign messages and verify that the messages were sent by a particular domain. It works like a wax seal on an envelope, preventing messages from being tampered with.

Tools to verify SPF and DKIM

  • http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard/
  • http://www.kitterman.com/spf/validate.html
  • http://www.mail-tester.com/
  • http://mxtoolbox.com/ (use syntax in search box like spf: example.com)

Resources:

  • http://support.google.com/mail/bin/answer.py?hl=en&ctx=mail&answer=1311182
  • http://support.google.com/a/bin/answer.py?hl=en&answer=174124

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