Xerox error 016-764
Scan to E-mail failed because the printer could not connect to the e-mail (SMTP) server.
Seen on: WorkCentre 6505 and other models with Scan to E-mail. The same code can mean something else on other models.
How to fix it
- Print a configuration report or ping the printer to confirm it is on the network.
- Open the printer's web page and check the SMTP server name, port and login under the e-mail settings.
- If you use Microsoft 365 or Gmail, check the account allows SMTP sending from devices; many tenants now block basic authentication.
- Check Scan to E-mail has not been locked by an administrator.
Is it worth fixing?
A settings problem. Microsoft 365 security changes are the most common cause on printers that used to work.