EZOSHosting uses the following Realtime Black Lists:
Open Relay DataBase (http://ordb.org)
Distributed Sender Blackhole List (http://dsbl.org/main)
Not Just Another Bogus List (http://njabl.org)
These systems are used to filter spammers from the mailservers. If someone is blocked from sending email through our servers you can look up the IP address of the sending email server at any of the above websites to learn why they are blacklisted.
If you would like to opt out of spam filtering for your account, please submit a ticket and mention your domain name. We will then remove real time blacklisting from your account.