This is the mail system at host mx2e27.netcup.net. 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 <fachschaft.medizin.weiterleitung(a)gmail.com&gt;: host 46.38.225.35[46.38.225.35] said: 550-Daily message limit exceeded. Your message send rate in the last 24 hours exceeds the maximum allowed amount of 750 messages per day. 550 Contact your postmaster/admin for technical assistance. Or send a mail to: postmaster(a)netcup.de In any case: Please provide the following information in your problem report: This error message, time (Jan 08 13:26:10), client (10.243.12.53) and server (policy02-mors.netcup.net). (in reply to end of DATA command)