From the home screen, touch > Settings > E‑mail > E‑mail Setup > Disable “SMTP Server not set up” error > On.
To prevent the error from happening again, do one or more of the following:
Getting an ‘E‑mail Transmission Failure’ or ‘E‑mail Set up Incomplete’ message? Check out the steps below to troubleshoot the issue.
Here are basic troubleshooting steps if you cannot set up etherFAX in your printer.