This is the mail system at host mail.zapf.in. I'm sorry to have to inform you that your message could not 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 mail system <robotob(a)web.de&gt;: host mx-ha03.web.de[212.227.15.17] refused to talk to me: 554-web.de (mxweb004) Nemesis ESMTP Service not available 554-No SMTP service 554-Bad DNS PTR resource record. 554 For explanation visit https://postmaster.web.de/de/case?c=r0601&i=ip&v=116.202.37.52&am...