If email server doesn't support secure connection you need to change the port value to either 465 or 587, then modify the Exception Details: System. $fromEmail = 'local@example. 57 Client not authenticated to send mail. A common cause is the use of basic authentication, which may be blocked due to I am attempting to send automated emails to users via Gmail using a PowerShell script. The Using Send-MailMessage is not only easier, but takes a credential object, which is a little more secure than plain text. 1 Authentication Required? Send-MailMessage : The SMTP server requires a secure connection or the client was not authenticated. SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: . I get the error: Send-MailMessage : The SMTP server requires a secure connection or the client was not authenticated. Might want After running this scrip i got below error ----- Exception calling "Send" with "1" argument (s): "The SMTP server requires a secure connection or the client was not authenticated. Net. Send Email via Gmail from PowerShell CLI. Brings up error:Send-MailMessage : The SMTP server requires a secure connection or the client was not authenticated. 57 Email sending failed: The SMTP server requires a secure connection or the client was not authenticated. 7. GitHub Gist: instantly share code, notes, and snippets. txt’ : this file is generated by using “app password” and above script is working fine and we are able to send mails if we use “app password” Send-MailMessage : The SMTP server requires a secure connection or the client was not authenticated. Mail. Learn more at At As per your mentioned description about "how to fix:The SMTP server requires a secure connection or the client was not authenticated. Learn more at I'm trying to send an email from a PowerShell script, but I cannot seem to get it to properly authenticate with my SMTP server. As I understood from Google Support, currently for personal Hi, I am trying to use PowerShell script to send automatic emails to the users using Gmail. Step-by-step guide to enable TLS, update SSL Windows PowerShell - SMTP server requires a secure connection or the client was not authenticated. 0 Must issue The SMTP server requires a secure connection or the client was not authenticated. - Gmail Community. How to fix 'the SMTP server requires a secure connection or the client was not authenticated' error when the server response was 5. 1 Authentication Alright so as the title says, I get this error when trying to send email via PowerShell: Send-MailMessage : The SMTP server requires a secure connection or the client was not when i try the send mail using powershell mail server. however, when I am running the script, encountering the following error message The Learn how to fix the “5. 0? ‘D:\ADReports\gmail. 3 STARTTLS is required” error in SMTP, Exchange, and PowerShell. However, when I run the script, I encounter the error message: "The SMTP server In this mode, the SMTP session begins on an unencrypted channel, then a STARTTLS command is issued by the client to the server In this article I will explain how to resolve the error: The SMTP server requires a secure connection or the client was not authenticated. com I am trying to send mail using gmail, and I am getting an exception that is The SMTP server requires a secure connection or the client was not authenticated. 1 Authentication Required. 5. The SMTP server requires a secure connection or the client was not authenticated. 0 Authentication Required BR 21 Apr 29, 2025, 1:01 PM Emails Send-MailMessage : The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5. thus send-mailmessage with commands like this send-mailmessage -From Send-Mailmessage : The SMTP server requires a secure connection or the client was not authenticated. Send feedback on These errors typically indicate that the SMTP client failed to authenticate with the server.
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