What does 535 incorrect authentication data mean?
A “Server says: 535 – Incorrect authentication data” error is usually related to the SMTP User Authentication details you have configured (or not configured) in your email settings. This error is often reported by mail users who maintain multiple mail devices, and forget to update login details in one of their devices.
How do I fix SMTP Error 535?
To resolve this issue you need to take a number of steps:
- Login to the control panel and check the status of your account to ensure it is not disabled for any reason – any issues would normally be highlighted for you.
- Check you are using the correct username and password.
Is SMTP required?
1 Answer. A SMTP server is always required to be able to send emails, like as a HTTP server is always required to be able to send webpages. This is regardless of the website and the mail API you’re using. A HTTP server is not the same as and does usually not include a SMTP server.
How do I find my SMTP authentication?
Click the button More Settings… in the lower right-hand corner. The Internet Email Settings box appears. Click on the tab Outgoing Server. Click the tick box “My outgoing server (SMTP) requires authentication”, and ensure that the circle-box “Use same settings as my incoming mail server” is selected.
What does SMTP error ( 535 ) authentication failed mean?
Occasionally, mail servers may reject emails with some strange errors, such as “SMTP Error (535): Authentication failed ” At Bobcares, we often get requests from customers to fix SMTP errors as part of our Technical Support Services. Today, we’ll see how our Support Engineers help our customers to resolve such tough email errors.
How to turn on SMTP Authentication in email client?
Luckily, configuring SMTP authentication is a simple procedure. It involves modifying the SMTP configuration settings and making necessary changes. Fill in your email account username and click Ok. Finally, configuration will show up as below. We already saw how to turn on SMTP Auth in email client.
What happens when SMTP authentication fails in outlook?
Mail client like Outlook uses SMTP (Simple Mail Transfer Protocol) to send messages. Later, to download the mails E-mail clients use either POP or IMAP protocol. But, for any reason, if the authentication fails, mail client like Outlook generates an appropriate error message.
Do you need to do SMTP Authentication in cPanel?
SMTP authentication in cPanel allow sending messages via POP-before-SMTP. Here, once when the Outlook download the mails, there is no need to re-authenticate to send mails through SMTP. Usually, SMTP authentication will be disabled in WHM by default.