I hate using aol on my computer, and got sick of going to aol.com to check my mail, so i looked up on how to setup mac mail for it.. I think i did something wrong because i receive this message when trying to send mail.. which i dont understand because yesterday i was able to send mail.. i did several to myself and other people.. today when i tried.. i get this message.. This message could not be delivered and will remain in your Outbox until it can be delivered. Verify that you have addressed this message correctly. Check your SMTP server settings in Mail Preferences and verify any advanced settings with your system administrator.