ESN . POSTMASTER

Extra Security Networks


Spam Block List Policy

ESN is committed to the goal of elimination of unsolicted email. As a result, ESN maintains a very strict anti spam policy. As a part of our anti spam policy, we choose to reject email from some sources.

Third Party Block Lists
ESN utilizes several DNS based RBLs to combat spam. These RBLs may block an incoming mail based on the sending server IP address, network, host name, sender domain, or URLs contained in the email. The source, type, and mix of RBLs varies over time.

We trust the judgement of the RBL operators, and we cannot remove your information from the RBL. If your server, IP or domain is listed in an RBL, we will not accept mail from your server or domain. If listed, you must contact the operator of the RBL to get the listing removed, before we will accept mail from your server or network.

Local Block Lists
ESN also maintains several local block lists. These local block lists may block an incoming mail based on the sending server IP address, network, host name, sender domain, or URLs contained in the email. The criteria for being listed in a local block list varies and evolves over time. But one sure way to get listed, is to send spam, unsolicited, or unwanted email to our network.

We will not remove a domain, IP, or network from our local block list, when that request comes from the owner of the blocked domain, IP, or network. We will only remove a domain or IP from the local block list, if a recipient on our network requests the removal. In the case of a network block, we may exempt specific IPs from blocking, but will not remove the network blocking.

Whitelisting
We will not whitelist any domain, network, or IP. It is the responsibility of the owner of the sending server, IP, network, or domain to make sure that their systems are properly configured, clean, secure, and spam free.

While we may decide to exempt specific IP addresses from network based block list, we will not whitelist those addresses. Our only action would be to not actively block those exempted addresses. If those exempted addresses were to fail some other test or were listed in a third party RBL, email from those addresses or senders would still be blocked.