Headers have nothing to do with mailing these days, only tools who use windows spamming applications think that.
Headers have nothing to do with the outgoing mail servers dns information. Of which aol uses to proccess. There are other techniques and data packets you must send for them to identify your mail is coming form a legit mail source.
think about it, aol looks at mail coming from a proxy as a localhost.localdomain type of host. not an authentic mailserver, there for denying the mail entry.
You are clueless
Name a program that is getting you into aol, hotmail, msn, yahoo no problem non-stop. I know some spammers who pay thousands and thousands of dollars developing software and they still get no where.