5.7.3 Authentication unsuccessful [CH2PR05CA0066.namprd05.prod.outlook.com]: Page 2

5.7.3 Authentication unsuccessful [CH2PR05CA0066.namprd05.prod.outlook.com]

JuVDC

Yeah I saw that... but I can't believe the solution would be to create a new mailbox... our whole support system and communications are organized around this existing mailbox...

Has anyone else solved it through the new mailbox creation?

KevinTheJedi

JuVDC

Just had a call with another customer and their SMTP was throwing same error. They deleted the email and recreated it and it worked afterwards. So definitely seems related to existing accounts. MS really needs to fix this issue.

Cheers.

jeremyCorn123

I am having the same issue with a particular email on our account. Does anyone else also have multiple domains where the username and primary email address have different domains?

ait1

AgilitasLtd-BE fresh mailbox

What is that mean for the "fresh mailbox"? Thank you

KevinTheJedi

ait1

I believe they mean creating a new account (mailbox). I'm basing this off their comment above:

Just as norternnoel above said, creating a new email/mailbox fixed things!

Cheers.

ait1

Hi, I have the same issue with 5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Tenant. Visit https://aka.ms/smtp_auth_disabled for more information. [BLAPR03CA0095.namprd03.prod.outlook.com. Even though I recreated the mailbox, it still has the same issue. And I use a new mailbox to signup on the ostickte, it still has the same issue with Authentication unsuccessful, SmtpClientAuthentication is disabled for the Tenant. Anyone finds the solution?

KevinTheJedi

ait1

Did you enable Authenticated SMTP permission for the User in the Exchange Admin Center? You should contact your O365 admin and have them enable it for you.

Cheers.

ait1

KevinTheJedi you are right, we forgot to enable the SMTP Authentication on Godaddy site. Thank you.

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