Outgoing server (not working) : smtp.office365.
The message could not be sent because the connection to Outgoing server (SMTP) timed out. Please verify that your Outgoing server (SMTP) settings are correct and try again.'' The message could not be sent using Outgoing server (SMTP) for an unknown reason. Outgoing server (not working) : port 465 SSL/TLS OAuth2 Incoming server (working): IMAP mail server port 993 SSL/TLS OAuth2 The current settings in my thunderbird for this account are as follows:
I have a mac mini which is running MacOS Sierra version 10.12.6
I have seen online a suggestion that I clearing history (caches and cookies) might help although this seems at odds with the advice to check there was a microsoft cookie so I haven't done that yet.Ī guy from Microsoft support suggested deleting my thunderbird profile and starting again (!) which I'm reluctant to do.įor clarity - I'm using Thunderbird 78.14 (64 bit) and it's telling me that it's up to date I've checked from the microsoft end that MFA is disabled (the microsoft guy said this could be a factor) Trying again just seems to waste time rather than sending the email.Įvery other authentication method available there (and closing and reopening TB in between each trial)ĭeleting and reinstalling the whole mailboxĬhecking that there is a microsoft cookie in the cookie stash Please verify that your Outgoing server (SMTP) settings are correct and try again. I have occasionally got different error messages including:įailed due to unexpected error 80004005. While in Office 365 Outlook Web Access, click the Gear icon at top-right and Select Options. Click on Mail on the left and then Sync mail on the right and scroll down to POP and IMAP. But then 5 mins later it told me that the server had timed out and nothing had been sent. While in Office 365 Outlook Web Access, click the Gear icon at top-right and Select View all Outlook Settings. But when I tried to send, it told me that it was connecting to Office 365.
Success - I managed to login and download my emails.
Since then I've tried many permutations of settings but nothing has worked. Some googling later I found out that MS needed more security so I changed authentication from normal password to OAuth2.
But then 5 mins later it told me that the server had timed out and nothing had been sent. But when I tried to send, it told me that it was 'connecting to Office 365.'. Some googling later I found out that MS needed more security so I changed authentication from normal password to OAuth2. Disclaimer: The information on this page is provided 'as is' without warranty of any kind. Wouldn't let me log on and told me that my login/password details were incorrect but they were the same ones I could use to login to webmail so I knew they were correct. User Name: useryourdomain.tldshared-mailbox-alias(Syntax: usershared-mailbox) Password: users password. Initially when I set it up it all worked lovely. I've recently added a new work email to my thunderbird. office 365 o365 microsoft outlook mail.