Hello everyone, I'm a new iMac owner. This is my first Mac ever and so far I'm loving it - it looks great and it's a speed demon. The OS will take some time getting used to but I already find it more intuitive. I wanted to try using the mail program that came with the computer (version 2.0.8). I set up the incoming and outgoing mail servers the same way as in my Outlook Express. When I try to send a message I get the following Error text "This message could not be delivered and it will remain in your Outbox untill it can be delivered. The sender address (my email here) was rejected by server". I went to Window -> Connection Doctor and it indicates no problems (Connection Status:Mail was able to connect to the internet, green lights etc.) I called my provider (Rogers in Canada) and unfortunately they don't support that email program. However, they verified that everything is Ok on their end (right password, in/out servers etc.) - well I knew that since I can send email from my PC without any problems. Any ideas what's going on? Thank you in advance.