Ich habe eine Mail (kabelmail.de) an vier Adressen gesendet und diese Fehlermeldung erhalten:
This is the mail system at host mr4.vodafonemail.de.
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
<ADRESSE>: host
w014ea7a.kasserver.com[85.13.156.209] said: 550-5.7.1 Service unavailable;
client [145.253.228.164] blocked using mail.badip.de 550 5.7.1 please see
https://kasserver.com/rbl/ (in reply to RCPT TO command)
Was kann ich dagegen tun?
Vielen Dank!
