I've been using Thunderbird as my central email point for years. Different email addresses from different hosts, etc. -- all fine.
About a year ago, GoDaddy "upgraded" my personal domain's email to Office365. Managed to survive; all still working, though I couldn't add a new email on my domain to Thunderbird.
This week, I'm told I have to update other details because MS is requiring Exchange (or something like that), and third-party email clients won't work right any more.
Talked with GoDaddy support for over an hour trying to get it all working. Based on his research and our trial-and-error, all of the incoming and outgoing server settings seem to be working -- but only if the Avast shields are disabled. This only seems to happen for the office365.com and googlemail.com domains. The others work fine with shields up.
Am I missing something?
Incoming Server Type: POP
Server Name: outlook.office365.com:995
Security: SSL/TLS
Authentication: Normal password
Outgoing SMTP Server: smtp.office365.com:587
Security: STARTTLS
Authentication: Normal password
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Incoming Server Type: IMAP
Server name: imap.googlemail.com:993
Security: SSL/TLS
Authentication: Normal password
Outgoing SMTP Server: smtp.googlemail.com:465
Security: SSL/TLS
Authentication: Normal password