Description of this article
These steps will show you how to configure the settings on your e-mail address other than your @hawaiiantel.net address (formerly @verizon.net). This could be hosted domains such as kai@surfco.net or web mail addresses such as kai@gmail.com) you may be using a Verizon Open Relay SMTP address to send email. Read the steps below for detailed instructions on how to fix this issue in Thunderbird for Mac/OSX.
1. Begin with opening up Thunderbird
2. Click Tools in the main pull-down menu then select Account Settings...
3. Click on the e-mail account listed in the navigation pane on the left then click Outgoing Server (SMTP)
4. Be sure to:
5. Click OK to finalize the configuration