I installed DKIM and SPF. Do I need to install Domain Keys as well?

Posted by johnlai2004 on Server Fault See other posts from Server Fault or by johnlai2004
Published on 2010-06-06T21:52:36Z Indexed on 2010/06/06 22:02 UTC
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domainkeys

I have linux apache mysql and php server. My website uses the php mail() function and the server's postfix server to email other people.

I successfully installed SPF and DKIM on my server to reduce the likelihood of my website's email-outs from ending up in people's spam boxes.

In my research, I stumbled on Domain Keys which seems to be a "historical" version of DKIM. Do the big web mail services like Google, Yahoo and Hotmail still use Domain Keys? If not, then maybe I don't need to install it?

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