CenturyLink follows the industry standard of port 25 filtering to reduce the spread of email viruses and spam. Port 25 filtering prevents unauthorized and possibly infected messages from being sent through the network.
Customers with a dynamic IP address cannot turn off port 25 filtering.
If you have not leased static IP addresses from CenturyLink, or encounter another scenario with port 25, please contact us.
If you have a residential account, such as an email address that ends in @q.com or @centurylink.net, order a static IP address through the Static IP tool.
If you have a small business account, such as an email address that ends in @qwest.net or @qwestoffice.net, order a static IP address using the Account Manager.
You may configure and start using your static IP address within one hour of ordering it from CenturyLink.