The forum AI Bot gives the following previous topics, some give solutions:
Here are some relevant topics from the Manager Forum that might help you understand and resolve the “535 SMTP error”:
- “Unable to setup my email” - the user discusses issue with different configurations and gets error messages, including 535 SMTP error.
- “Email problem after upgrade” - In this thread, the 535 error occurs after an update and discussion is focused on resolving this issue with Gmail accounts.
- “Office 365 SMTP - 535 5.7.3 Authentication unsuccessful” - A focused topic on Office 365 smtp with an error message for unsuccessful authentication.
- “SMTP Error message using Office 365 account” - A discussion about the unsuccessful authentication error when using an Office 365 account.
Please note, “535 SMTP error” is usually associated with authentication issues. This could mean that the setup of your SMTP server isn’t correct, or the username/password is incorrect. Please review these threads and determine whether the recommended solutions can address your problem.