I own my biggdog.biz domain but I do not have a static IP. I use Dyndns to keep my stuff running. I am wondering if it is possible to add DKIM signing to my outgoing mail or if it is needed. I like to tinker with systems and this is something I have been wanting to tackle but do not know if it is possible in my situation. Now if the question needs to be asked "Why would you want to mess around with it" I simply want to know that I have tried it or got it to work with my setup. I am not the smartest out there but I am always willing to try something. Thanks in advance.