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I can't send messages anymore from thunderbird with an outlook adress

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  • Last reply by mgabbay

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Hello, Since the Oauth2 security from Microsoft, I can't send messages anymore from thunderbird with an outlook adress (but I can receive messages after following instructions) I followed rigourously the instructions from Microsoft and Thunderbird on this two pages : https://support.microsoft.com/fr-fr/office/param%C3%A8tres-pop-imap-et-smtp-pour-outlook-com-d088b986-291d-42b8-9564-9c414e2aa040 https://support.mozilla.org/fr/kb/microsoft-oauth-authentification-thunderbird (These are pages in french because I'm French hence my poor english (sorry for that)) And tried every solution (for instance, the smtp server advised is not the same for Microsoft and Thunderbird, of course I tried both many times)

Thanks for your answers Michel

Hello, Since the Oauth2 security from Microsoft, I can't send messages anymore from thunderbird with an outlook adress (but I can receive messages after following instructions) I followed rigourously the instructions from Microsoft and Thunderbird on this two pages : https://support.microsoft.com/fr-fr/office/param%C3%A8tres-pop-imap-et-smtp-pour-outlook-com-d088b986-291d-42b8-9564-9c414e2aa040 https://support.mozilla.org/fr/kb/microsoft-oauth-authentification-thunderbird (These are pages in french because I'm French hence my poor english (sorry for that)) And tried every solution (for instance, the smtp server advised is not the same for Microsoft and Thunderbird, of course I tried both many times) Thanks for your answers Michel

All Replies (4)

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First, make sure that your server setup matches this: - incoming: outlook.office365.com, port 993, SSL/TLS, Oauth2 (assuming IMAP) - outgoing: smtp.office365.com, port 587, STARTTLS, Oauth2

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david a écrit

First, make sure that your server setup matches this: - incoming: outlook.office365.com, port 993, SSL/TLS, Oauth2 (assuming IMAP) - outgoing: smtp.office365.com, port 587, STARTTLS, Oauth2

I'm in POP3, for incoming messages the default port is 995 (anyway, incoming messages work) The other specs are exactly what you wrote.

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Are you using your full email address, including the text to the right of the @?

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yes, I do

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Sual ver

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