mdaemon mail server

Hi everyone, i have just setup a mail server running on my server 2003, I can receive emails no problem from my microsoft email address etc and i can send emails to my friends mail server but cant send emails to my microsoft address or any others like AOL etc, anyone got any ideas on what i could try next :D thanks steven.

Is this on your home connection?
If so, you will need to use you ISPs smtp servers to get around this.. if not, get your host to setup a rDNS (PTR) record.

Hope this helps =]