RBL Information

You probably came to this URL because your mail was rejected by our mail servers with an error message pointing to this page.

RBL means Realtime Blackhole List and is used by our mail servers to block other mail servers based on IP address.

We administrate the RBL to block out relay open or misconfigured mail servers that caused trouble or harassed our users e.g. by distributing SPAM.

For some of the messages that are used with the RBL we have background information:

stray newlines

Servers sending stray newlines violate the SMTP protcol. ... mehr 

mail bombs

Sometimes some users on the Internet have troubles with one another and start to fight. Often this fights are done with mail bombs. ... mehr 

DNSBL lists

To see if your mail server is on some other DNSBL lists, please enter the full IP address, not host/domain names (this may take a while):

IP

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