What does client was not authenticated mean?
1 – Client was not authenticated” error is usually related to the SMTP User Authentication details you have configured (or not configured) in your email settings. Here are instructions to add or modify SMTP User Authentication details in GroupMail.
How do you fix the SMTP server requires a secure connection or the client was not authenticated?
To summarize, I had to take into consideration the following points:
- Use smtp.gmail.com instead of smtp.google.com.
- Use port 587.
- Set client. UseDefaultCredentials = false; before setting credentials.
- Turn on the Access for less secure apps.
- Set client. EnableSsl = true;
What does 5.7 0 authentication required mean?
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7. 0 Must issue a STARTTLS command first: This error means that the transport layer security (TLS) needs to be set to “Yes” in your SMTP settings.
How do I fix server does not support secure connections?
What to do if Email server doesn’t support secure connection?
- Change ‘client. port’ value.
- Change the value of SmtpServer. EnableSsl.
- Change settings of your Gmail app.
- Use a third-party email client service.
What is SMTP authentication failure?
If your mail server (also known as the SMTP server) rejects the user name and password, an Authentication Failed error will result. You will not be able to send any email until this problem is resolved, although it may not affect the ability to receive email.
How do I authenticate SMTP?
How to configure SMTP authentication
- Right-click on the context menu of your e-mail account and click on “Settings”
- Navigate to “Outgoing server (SMTP)” select your mail server and click “Edit”
- Activate the option “Use username and password” and enter your e-mail address.
- Confirm the settings with “OK”
What does the server does not support secure connections mean?
This issue can be extremely annoying, especially if you need the script to run properly for a company or multiple users. This error message is caused by one of the following issues: the connection settings are incorrect (wrong port specified) the credentials provided are incorrect (username and password)
What to do if SMTP client was not authenticated?
Ensure that the SMTP credentials are correct. If you are confident the credentials are correct, contact the administrator of the email server for further assistance. Consider configuring the email server to allow anonymous connections. (See How to Resolve “530 5.7.1 Client was not authenticated” Error In Exchange 2007- 2010 – 2012 )
Why is my 5.7.1 client not authenticated?
The server response was: 5.7.1 Client was not authenticated ANS. Most of the time you will get this error from form Internet mail. if permission on the Receive connector is not proper. If you are using E2K7 OR E2010 Server then please check the Default Receive connector and checked the Anonymous users permission.
What is the SMTP error code 550 5.7.1?
Sometimes, the email delivery may fail and the following message may get relayed back to the server – an SMTP error code 550 5.7.1, “The SMTP mail system returned the following error: (0x8004020F): The server rejected one or more of the recipient addresses. The server response was 550 5.7.1 Unable to relay”
What is the SMTP error code for exchange?
In Exchange, after enabling the IMAP or POP3, you must configure the authenticated SMTP settings for users so that they can send emails. Sometimes, the email delivery may fail and the following message may get relayed back to the server – an SMTP error code 550 5.7.1,