Understanding port 25 filtering

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. 

How do I turn port 25 filtering on or off? 

Customers with a dynamic IP address cannot turn off port 25 filtering.
 

  • If you have leased static IPs and your email address ends in @q.com or @centurylink.net, login to the Static IP tool
    • Under the Port 25 Filtering heading, select "Turn Off."
       
  • If you have leased static IPs and your email address ends in @qwest.net or @qwestoffice.net, login to Account Manager.
    • Under the Features section, select Port 25 Filtering. You will be prompted to Disable Port 25 Filtering. Select Next to disable the filtering.
       
  • If your login ends in @qwest.net, and can be found in your modem user interface (GUI), select the Modem Status icon and then look for the "PPP User Name."

If you have not leased static IP addresses from CenturyLink, or encounter another scenario with port 25, please contact us

How do I order static IP addresses?

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. 

Was this article helpful?
CenturyLink.net
Visit your home page, where you can check your CenturyLink email, browse news and check the weather.
Top Tools
Internet Speed Test
Service Troubleshooter
Service Appointment Manager
Where's My Technician?
Modem Compatibility
Manage My Services
Find Product Availability
CenturyLink Product Support
Search Support