I can receive e-mail at home, but cannot send.
I got a Verizon Aircard that really spedbup up my internet connection rather than the old bellsouth dial-up. (We can't get DSL where I live). I have a bellsouth e-mail and while I can receive through outlook on the aircard, I cannot send through outlook on the air card. To send an e-mail, I have to get off the aircard and go on line through te slowwwwww dial up connetection to send an e-mail.
If you have made any semilar changes to your web connection, it may have an effect on your e-mail.
At least it has for me.