Daniel Schmid Posted May 29, 2020 Share Posted May 29, 2020 Hello, First i habe to sorry my bad english I'm trying to use SMTP with Office 365 Environment (Tenant). I cannot send E-Mails with the settings i can provide in the Password State System Settings. I have opened a Microsoft Support Case for this case and they told me that the used Authentication against the Office 365 Mailbox is not working, because the error Message says that the user isn't authenticated so he cannot sending E-Mails. An Office 365 SMTP Authentication needs the Authentication Method "LOGIN". Or has anyody else other experiences with SMTP Client against Office 365 ? Kind Regards, Daniel Link to comment Share on other sites More sharing options...
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