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Can't login to smtp-mail.outlook.com

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  • Last reply by SamMeredith

SamMeredith
SamMeredith
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I have recently added a Microsoft exchange account to Thunderbird. I am able to connect to and receive emails through imap, but I cannot send emails. The error I get is a 'Login Failed' error with the message 'Login to server smtp-mail.outlook.com failed.' but I have double checked that my login information is correct (and reset my password and tried again). I can also happily send emails from the webmail and from a desktop copy of Outlook. I have tried all the suggestions in the 'Cannot send messages' troubleshooting article with no success.

My outgoing server settings are:

Server Name: smtp-mail.outlook.com

Port: 587

Authentication method: Normal password

Connection Security: STARTTLS

This is a Microsoft Exchange email, I am running Thunderbird 52.9.1 on Windows 10. Any suggestions on what the problem might be?

I have recently added a Microsoft exchange account to Thunderbird. I am able to connect to and receive emails through imap, but I cannot send emails. The error I get is a 'Login Failed' error with the message 'Login to server smtp-mail.outlook.com failed.' but I have double checked that my login information is correct (and reset my password and tried again). I can also happily send emails from the webmail and from a desktop copy of Outlook. I have tried all the suggestions in the 'Cannot send messages' troubleshooting article with no success. My outgoing server settings are: Server Name: smtp-mail.outlook.com Port: 587 Authentication method: Normal password Connection Security: STARTTLS This is a Microsoft Exchange email, I am running Thunderbird 52.9.1 on Windows 10. Any suggestions on what the problem might be?

Modified by SamMeredith

Chosen solution

Thank you sfhowes. I did indeed have SMTP access enabled, but in navigating the admin settings I noticed that this address was set as a shared mailbox when it didn't need to be.

Changing from a shared mailbox back to a regular mailbox sorted the problem (though I'm not entirely sure why).

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SamMeredith
SamMeredith Question owner
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Chosen Solution

Thank you sfhowes. I did indeed have SMTP access enabled, but in navigating the admin settings I noticed that this address was set as a shared mailbox when it didn't need to be.

Changing from a shared mailbox back to a regular mailbox sorted the problem (though I'm not entirely sure why).