My SMTP Works, now i has a last problem. The sender of the mails is my private mail! I will also as sender my website mail: ...@mywebsite.com
How can i do that?
If you installed your oxwall on some hosting service, basically they have email service, you can create an email address, such as noreply@yourwebsite.com, ans use it as site mail, you don't need the SMTP at all, oxwall will send email through PHP Mail script from your site mail address.