After watching folk discuss at length email blocks from one ISP to another the simple solution is to use another account.
Win 7, Outlook 2007. I send e-mails to lots of people with no problems BUT earthlink.net subscribers are not receiving them.
I am a Road Runner (Time Warner) ISP subscriber. If I use the Road Runner web mail system I can successfully send e-mails to Earthlink subscribers, but not from my Outlook e-mail program. My servers are set to POP and SMTP.