The server response was: 5.7.57 Client not authenticated to send mail Microsoft 365 : Exchange Online / PowerShell – Resolving error – Send-MailMessage : The SMTP server requires a secure connection or the client was not authenticated. #microsoft365 #microsoft365dev #exchangeonline #exchange #powershell #powershellcmdlet #sharingiscaring #community #office365 #office365administration #sharepoint #sharepointonline #sharepointdeveloper #sharepointadministration Keep exploring PowerShell for Microsoft 365 - we have 100+ respective PowerShell scripts, please have a look.

Keep exploring Microsoft 365 on Microsoft 365 Hub. We will also got to know - how to send and email from PowerShell script The server response was: 5.7.57 Client not authenticated to send mail' while sending an email from PowerShell script. In this article we are discussing how to resolve error - 'The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 Client not authenticated to send mail.

Microsoft secure email powershell