Can't send mail with php

Hi All,

I've problem with my system. When a client want to send e-mail by php on my first, it doesn't work. So I don't know how can I must configure it to work with my postfix on my third server. Is there a way to send e-mail without used my mail server ?

Thank you in advance for your help

 

Are there any errors in your mail log?

 

You may have same problem as me, avahi/clamav not working. See this post how I fixed it for postfix.
http://www.howtoforge.com/forums/showpost.php?p=203155&postcount=15