mail send with office365

1. use starttls with xxx-xx.mail.eo.outlook.com
2. use authenticated mail send
3. adopt your spf-record to include the dyn-dns a-record i.e.

 v=spf1 ip4:x.x.x.x include:spf.protection.outlook.com <strong>a:xxxxxxx.your-dyn-dns.net </strong>-all