Martin Obongita martin.obongita at
Mon Aug 22 09:09:29 UTC 2022

 Hi Phillip,
Yes. office365.
Is OAUTH2 in the sample libraries?

    On Monday, August 22, 2022 at 12:02:40 PM GMT+3, Philip Tulett <philip.tulett at> wrote:  
 Hi Martin,

Is that an Outlook365 account ?
If so, it maybe that Basic Authentication is not enabled/has been disabled
on that account.
In which case, it either needs to be enabled, or you need to switch to use
Modern Authentication/OAUTH2.

Kind regards
Philip Tulett

-----Original Message-----
From: omnisdev-en <omnisdev-en-bounces at> On Behalf Of
Martin Obongita via omnisdev-en
Sent: 22 August 2022 09:48
To: omnisdev-en at
Cc: Martin Obongita <martin.obongita at>
Subject: SMPT Send

Hi All,
I'm using the smtp worker object to send emails through an outlook account.
I keep getting the error message Authentication unsuccessful.
SmtpClientAuthentication is denied.I have the password and the correct port
number for the account.
How do I resolve this error?
Kind regards,Martin O.
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