[ZendTo] SMTP authentication on Exchange Online suddenly not working

[arnaud Chevalier]

I did  a mistake on the issue description: It's the IMAP authentication that not working anymore, you can see my configuration below:

[cid:4046d320-0e6f-4318-be6f-644ff9ba36e9]

On exchange online side, I see SMTP authentication sucessfull from ZendTo, but no log about IMAP authentication  from ZendTo (no sucess nor fail, nothing). It's like ZendTo is not even trying to loggin through IMAP.
On front side (try to log to the dashboard) I see a message telling me that the username or the password is not correct:
[cid:c4deba4b-01ac-41bf-8b30-d263b9b84445]

Thank you very much.

Arnaud

________________________________
De : ZendTo <zendto-bounces at zend.to> de la part de arnaud Chevalier via ZendTo <zendto at zend.to>
Envoyé : mercredi 6 juillet 2022 18:08
À : zendto at zend.to <zendto at zend.to>
Cc : arnaud Chevalier <arnaud_chevalier at hotmail.fr>
Objet : [ZendTo] SMTP authentication on Exchange Online suddenly not working

Dear all,

I hope you are fine.

I have a sudden issue on my ZendTo (v6.11-2), I can't connect anymore through the smtp authentication on Exhange Online. (smtp.office365.com / port 587 / tls on)
But the account used to send daily reports email, can connect on the smtp of exchange online and send emails... So the smtp authentiction obviously working fine...

MFA is not activated on the account.
There have been no change on my ZendTo install or on the OS.

Do you have an idea?

Thank you very much.

Arnaud

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