I am configuring my new HYPER-V VPS, but when i try to send a mail i have:
Mailbox unavailable. The server response was: Rejected looks like spam score=6.7 required=5.0 trigger=5.0
This is my config file:
<network host="smtp.vps.myhosting.com" port="25" defaultCredentials="true" />
The sender mail was created with Google Apps and i can send/receive mails without any problem.