Email library send mail to spam box

Hello bnsd,
A small list:
- https://en.wikipedia.org/wiki/Sender_Policy_Framework
- wrong mx entry in you domain setting

I need more infos from you like mailserveradress

Edit:

If you send mails from xyz.de (you mailserver) as [email protected] you get a spam flag. To change it you need the spf entry for the xyz ip in you example.com domain setting.