One of the new features available to us as a result of our mailserver upgrade is the ability to utilize third party SPAM blacklist administration. The process of blocking email from blacklisted domain names is nothing new at WTC Communications. In the past we have always internally maintained a list of domain names that we would not accept email from because they were sending unsolicited, bulk email to our customers. The fact that it was a list that was maintained internally meant that we didn't have all the resources necessary to make sure we were blocking all of the domains we should.

With our new third party administrative capabilities, we are able to verify incoming email against a variety of third party blacklist providers. These providers specialize in maintaining up to date, accurate databases of mail servers that allow SPAM. When someone attempts to mail from a domain that is listed in one of the provider databases, our mail server will reply to the sender indicating that their domain has been blacklisted. The blocked sender can reply to the initial blacklist message to get contact information.

The text of that email will refer the offending mail server administrator to our various blacklist providers for more information. These providers are listed on the table to right. Since we do not maintain any of these third party blacklists, we do not have the authority to remove an offending domain from the database. Thus, it is imperative that administrator contact the referring provider.

In addition, we have had to add some domains to our own Email blacklist due to massive amounts of SPAM attempts. If this is this case, the blacklist notification will come directly from WTC Communications and not a third party provider. If an individual receives notice that WTC Communications has blacklisted their domain, their mail server administrator will have to contact WTC Communications directly to resolve the issue. Once again, this applies to cases where it has been determined that WTC Communications has blacklisted their domain internally.

As always, if you have questions concerning our SPAM filter procedures, please contact Internet Technical Support at 1-877-794-5866 or via Email at support@netwtc.net.

Participating Databases

sbl-xbl.spamhaus.org

invaluement.com

njabl.org

The process of blocking email from blacklisted domain names is nothing new at WTC Communications. With our third party administrative capabilities, we are able to verify incoming email against a variety of third party blacklist providers. These providers specialize in maintaining up to date, accurate databases of mail servers that allow SPAM. When someone attempts to mail from a domain that is listed in two or more of the provider databases, our mail server will reply to the sender indicating that their domain has been blacklisted. The blocked sender can reply to the initial blacklist message to get contact information.

The text of that email will refer the offending mail server administrator to our various blacklist providers for more information. These providers are listed on the table to right. Since we do not maintain any of these third party blacklists, we do not have the authority to remove an offending domain from the database. Thus, it is imperative that administrator contact the referring provider.

Participating Databases


bl.spamcop.net

sbl.spamhaus.org

ybl.megacity.org