The BLOCKEDSERVERS Torexit Blocklist is an IP-based blacklist (blocklist) that exclusively lists the IP addresses of Tor exit nodes, allowing mail server administrators to reject or flag emails from these potentially anonymous sources.
The BLOCKEDSERVERS Torexit Blocklist is a specific type of DNS-based blacklist (DNSBL) that focuses on identifying and listing the IP addresses of Tor exit nodes. Tor is a network that allows users to browse the internet anonymously, and exit nodes are the final servers that Tor traffic passes through before reaching its destination.
Its policy is straightforward: if an IP address is acting as a Tor exit node, it gets listed on this blacklist. This blocklist is used by system administrators and network operators who wish to block or flag traffic originating from the Tor network. The reasons for this can vary, from preventing spam and abuse from anonymous sources to enforcing policies that restrict access from anonymizing proxies. This is an IP-based blocklist, meaning it lists individual IP addresses rather than domain names.
This blacklist is operated by an organization known as BLOCKEDSERVERS. There is limited public information available about the organization itself. However, they do publish some of their internal policy weighting for how they score different blocklists, which provides some insight into their operational perspective. Their Policyd-Weight configuration shows the relative importance they assign to various well-known blacklists:
If you find your IP address on this particular blocklist, it is because it has been identified as a Tor exit node. The primary step for removal is to stop operating as a Tor exit node. The listing is often dynamic, so once the IP is no longer part of the Tor network, it should eventually be removed automatically.
If you believe your IP address has been listed by mistake, or if it is no longer a Tor exit node but remains on the list, you can request a manual delisting. BLOCKEDSERVERS provides a removal form on their website. You will typically need to perform a lookup on your IP address first, which will then give you the option to request removal.
The impact of being listed on the BLOCKEDSERVERS Torexit Blocklist is generally considered low for most senders. This is a highly specialized blacklist. Its usage is limited to mail servers and network administrators who have made a specific decision to block traffic from the Tor network.
Major email providers do not typically use this list to filter incoming emails. Therefore, a listing here will not have a widespread effect on your general email deliverability. The primary impact will be an inability to connect to the specific services that use this blacklist. If your server is not, and never has been, a Tor exit node, a listing is likely a false positive and you should seek delisting to resolve any specific connection issues.
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