Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

An error occurred while sending mail. The mail server responded: 5.7.1 From address not allowed. Please verify that your email address is correct in your accoun

more options

we are Verizon. This a.m. suddenly Thunderbird would not send email, and gave me the message above. I checked my server settings, and it says, "normal password."

we are Verizon. This a.m. suddenly Thunderbird would not send email, and gave me the message above. I checked my server settings, and it says, "normal password."

All Replies (1)

more options

1. Reboot the computer.

2. Wait a day to see if the problem still remains. It may be a temporary problem with Verizon.

3. Check the SMTP server settings in Thunderbird: Menu: Tools: Account Settings: Outgoing Server (SMTP): Find the Verizon server in the list and click edit. Compare the settings to Set up your email software with your Verizon email account settings

4. If there is still a problem, ask Verizon for help. The problem is not likely to be with Thunderbird.