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
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)
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.