If you are getting spam from this domain, let me apologize in advance. Unfortunately, From-Spoofing is one of the most common spam methods in use for which there is no defense. Let me reassure you, that I have and never will participate in spam type activity. I encourage you to remain vigilant in your anti-spam methods that you use with your email account. The headers of a given email are generally a clear clue about the origin of an email whether it be from the actual domain that it appears to be or elsewhere. Again, I wish I could do something to prevent the From-Spoofing.

UPDATE: 04-DEC-2011

I saw some potential areas that may have been how my email service was being utilized without my authorization, outside of FROM Spoofing. I have taken steps to further lock down the issue. Upgrade the blog software as well as turn off all email services. From what I can tell the issue occurred around November 16, 2011. It abruptly subsided after I initiated a few steps on the November 19th a few days later. I don't use my mail services to generate any traffic, so essentially any email coming @myoracleportal.com most likely isn't from me. I also setup the SPF settings on my domain so that it should reflect in the DNS settings that my domain isn't allow to send emails.

I will continue to monitor the situation. Again, I apologize for any disruption this may have caused you.