You read this, because you probably got the message
"Blacklisted, see http://www.o-schroeder.de/diverses/nospam.txt"

If you intent to send me an email to get rid of this message, send an email
to postmasterATpostrobotDOTde from an unlisted email source.

The following IPs/nets are blacklisted on my smtp

212.82.252.156
202.88.128.0/18
203.101.16.0/19
211.157.32.0/19
62.56.189.162/18
64.216.78.128/25
211.237.92.0/24
62.97.195.233/23
69.110.160.0/22