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Configure Thunderbird to use port 465 for sending email In order to change your port settings to port 465 in Thunderbird, you must do the following:

  1. Open Thunderbird, select the Tools menu and from the drop-down list select Account Settings.
  2. From the Account Settings window, in the left-hand column, select Outgoing Server (SMTP) and from underneath the Outgoing Server (SMTP) Settings area of the window on the right, select Edit….
  3. In the SMTP Server window, enter 465 in the Port: field. Ensure you checkmark the Use name and password field then enter your Verizon user name in the User Name field, omitting the portion of your email address.
  4. Select SSL/TLS in the "Connection Security" dropdown.
  5. When you are finished, select OK.
After you have completed the above steps for Thunderbird, you will be configured to use port 465 to send email with much greater safety and protection from spam and viruses.
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