note 55118 rejected from ref.mail by vincent

Note Submitter: keviin6 at gmail dot com ---- Hi all, I am having problem with sending mail from my domain. 1.sendmail_from key is not set in my server, which is running on unix machine 2. If i send with "from:" header in mail() function, thought it doesn't show any error it doesnt sent mail to those id. 3. Is there any possiblity to send mail without using mail() function? 4. I tried to set the sendmail_from key using ini_set(), it too doesn't seems to be working. 5. Somewhere i found, we can send mail using smtp port, socket, i am not aware of such coding, Some one help me plz