This is the Postfix program at host mail.w-d-a.de.

I'm sorry to have to inform you that your message could not be be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can delete your own text from the attached returned message.

The Postfix program

hanna@m-st.de: host 127.0.0.1[127.0.0.1] said: 550 5.7.1 Message content rejected, UBE, id=06130-03 (in reply to end of DATA command)