I've found several places discussing time zone issues but nothing that addresses any date problems.
I noticed a post entered with the date of: Date: 1969-12-31
Not knowing what caused this, I disabled all plugins and enabled them one at a time while making new posts between each. My new posts all had the correct date and time.
I then manually ran Postie and again the post came out with the date of Date: 1969-12-31.
How do I correct this?