Update your Xfinity Email port settings

To better protect your Xfinity ID and password from being compromised, third-party email applications (Outlook, Apple Mail, Thunderbird, etc.) through a non-encrypted connection are now required to use a secure outgoing mail server.

If you use a third-party email application, you’ll need to configure your outgoing mail server port to 465 or 587, and update the encryption settings of your outgoing mail server from non-encrypted to encrypted settings. If you don't adjust your email settings, you'll still receive emails, but not be able to send emails after the non-encrypted email settings are blocked.

Also, check out our FAQs about outgoing email settings below.

Note: To learn more about using third-party email clients (e.g., Outlook, Apple Mail, Thunderbird, etc.) to access your comcast.net email address, see how to enable or disable third-party client access to comcast.net email — FAQs.

Outlook 2007, 2010, 2013, 2016, or 2019

1. Open Outlook.
2. Click the File menu (Outlook 2010, 2013, 2016, or 2019) or Tools menu (Outlook 2007).
3. Click the Account Settings button.
4. Select your Xfinity email address and click Change.
5. Click More Settings in the lower right.
6. Click the Advanced tab.
7. Change the Outgoing Server to 465 or 587.
8. Make sure TLS is selected or checked as the encrypted connection. Use SSL if TLS isn't shown.
9. Click OK to save your settings.
   

Outlook for Office365

1. Open Outlook.
2. Click the File menu.
3. Click the Account Settings button and then click on the Server Settings.
4. Click Outgoing mail.
5. Change the port to 465 or 587.
6. Make sure SSL/TLS is selected, next to Encryption method.
7. Click Next to save your settings.
   

Mac (Apple) Mail

1. Open Mac Mail.
2. Click the Mail menu.
3. Click Preferences.
4. Click Accounts.
5. Select your Xfinity email address.
6. Click the Server Settings button to the right.
7. Select the Automatically manage connection settings checkbox in the Outgoing Mail Server (SMTP) section.
   

Windows 10

1. Open Windows 10.
2. Select the cog icon in the bottom left-hand corner, then select Manage Accounts from the right sidebar.
3. Select your email account from the list.
4. Select the Change mailbox sync settings option at the bottom of the page.
5. Scroll down, then select Advanced mailbox settings.
6. Change the Outgoing Server to 465 or 587.
7. Make sure TLS is selected or checked as the encrypted connection. Use SSL if TLS isn't shown.
8. Select Done and Save.
   

Outlook Express

1. Open Outlook Express.
2. Click Tools.
3. Click Accounts.
4. Select your Xfinity email address, then click Properties.
5. Click Servers.
6. Click the Advanced tab.
7. Change the Outgoing Server to 465 or 587.
8. Make sure TLS is selected or checked as the encrypted connection. Use SSL if TLS isn't shown.
9. Click OK to save your settings.
   

Windows Live Mail

1. Open Windows Live Mail.
2. Right-click on the account at left, then click Properties.
3. Click the Advanced tab.
4. Change the Outgoing Server to 465 or 587.
5. Make sure TLS is selected or checked as the encrypted connection. Use SSL if TLS isn't shown.
6. Click OK to save your settings.
   

Thunderbird

1. Open Thunderbird.
2. Click Tools > Account Settings (or) click View settings for this account from Home.
3. Click Outgoing Server (SMTP).
4. Click Edit.
5. Change the port to 465 or 587.
6. Make sure SSL/TLS is selected under Connection security.
7. Click OK.
   

Other email applications

Port settings can generally be found in your email application's Account Settings, Properties, or Preferences section. If your email application isn't listed above, please check with your email application developer for instructions on changing your email account settings.

FAQs

Why do I need to change my non-encrypted outgoing email server settings?
We're blocking non-encrypted outgoing email server settings to protect your Xfinity email username and password.

No accounts have been compromised; however, this change provides you and your personal information with the best level of protection possible.

Will changing the email settings affect how I get emails or manage my mailbox?
No. Changing your outgoing email settings will not impact the way your emails are received or managed.

What will happen if I don't update my port settings?
If you don't adjust your settings in your third-party email application, you can still receive emails. But, you can't send emails after the non-encrypted email settings are blocked. When non-encrypted email settings are blocked, you'll get an error message when you try to send an email.

When do I need to make these updates?
Please update your third-party email application settings before September 24, 2019, and no later than October 1, 2019.