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The mail could not be sent to the recipients because of the mail server failure.

  • Article
  • 03/10/2014

Question

Monday, March 10, 2014 10:57 AM

Hi,

  I am configured Database Mail,But i am getting below error while i am sending Test mail.

Message
The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 4 (2014-03-10T15:54:11). Exception Message: Cannot send mails to mail server. (The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.1 Client was not authenticated).
)

Pls help me,

Thanks - SelvaKumarSubramaniam.Please MARK AS ANSWER, if my answer is useful to U.

All replies (4)

Tuesday, March 18, 2014 3:14 AM ✅Answered

Hi Selvaons,

I would suggest you contact your mail administrator for assistance. Here are some good articles regarding how to configure database mail in SQL Server for your reference, please see:
http://blog.sqlauthority.com/2008/08/23/sql-server-2008-configure-database-mail-send-email-from-sql-database/
http://www.codeproject.com/Articles/29060/SQL-SERVER-Configure-Database-Mail-Send-Email
http://www.sqlservercentral.com/blogs/databaseexpertisecom/2010/05/12/database-mail-set-up-in-sql-server-2008/

Regards,

Elvis Long
TechNet Community Support

Monday, March 10, 2014 11:07 AM

http://social.technet.microsoft.com/Forums/exchange/en-US/3201f365-5b74-438f-b431-f8dc194958cc/571-client-was-not-authenticated?forum=exchange2010

Monday, March 10, 2014 12:50 PM

Error itself clarifies that your credentials were wrong. Have a look at the Credentials required.

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Tuesday, February 24, 2015 9:05 AM

Hi Selva,

If the SMTP require SSL, on the Database Mail Configuration Wizard - Manage Existing Account, you should set the option "This server requires a secure connection (SSL)" and also fill the Basic Authentication fields (User name and password) and then click "Next" and then "Finish"