Email problem - all outgoing mail end up as spam

[haaglin]

Hi.
Sorry if this is not the right place to ask this question.

Im running ISPConfig on my server, and if i run a php script to mail someone, it ends up as spam, or sometimes it wont even make it to the spam box. Gmail allways recieve the email (as spam).

I dont have a dns server, so i use http://www.domainnameshop.com as dns provider. This is a line from the details of the recieved email:

Received-SPF: neutral (google.com: *.*.*.* is neither permitted nor denied by best guess record for domain of www-data@*.*.*) client-ip=*.*.*.*;
Authentication-Results: mx.google.com; spf=neutral (google.com: domain of noreply@domain.com does not designate *.*.*.* as permitted sender)

####
Server ip is replaced with *.*.*.*
FROM email is replaced with noreply@domain.com
####

What does that mean?

Please help me fix this.