I installed Fedora core 3 server, Sendmail, Dovecat, webmail and have my domain name on my home's machine.
I can send email and receive to my email server with email@example.com address.
How could I set up sendmail that receives firstname.lastname@example.org
address without www.
Every time I sent email without www I got "Delivery Status Notification (Failure)" from where I sent (gmail or hotmail) them.