Please read before you comment/complain...

If it appears you are blocked by this service, please remember that the administrators of the systems you are trying to access are the ones blocking you, not SORBS. SORBS is just providing the data about why SORBS does not accept email from your IP address.

This service is a list of hostnames in the zone. These hostnames may appear to be real IP Addresses, however, in legal fact they are hosts in the DNS zone. These hostnames are directly relational to a SORBS database query for a SORBS opinion about the configuration or state of an IP address at a particular time.

For ease of use tools are provided to enable the end user to lookup how SORBS considers their IP address by looking up the relating SORBS hostname (eg: A DNS query for will give you the opinion of what in its database for the address or by using this page you can enter an IP address directly.

The First Amendment...

To our American friends, the First Amendment does not apply outside of the USA, and even if it did, it would not be applicable. The First Amendment is to stop the US government from creating any law prohibiting any form of peacable or religious speech. The law applies to the government, it does not apply to public or private companies nor does it apply to individuals. The actual text is: Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.

SORBS' Rights to publish...

SORBS has a right, and an obligation, to publish truthful information. SORBS strives to ensure all the information is accurate and will correct any errors as soon as possible after being notified of errors. Listings that are truthful, that are old or not be current, are not errors. This means if an IP is listed as previously sending spam, the fact it does not currently send spam does not imply the listing is an error.

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