Hey all, here's my issue: I recently switched from macOs to Linux mint and started using Thunderbird again. I have three email accounts. (1) Business, hosted through godaddy on an outlook/office365 platform (2) private on mail.com (3) private on web.de Initially, i set up three. Accounts 2 and 3 were fully functional (imap) from the get go. Account one had issues sending emails. Yesterday I sat down to finally try to solve the issue. In my "turn everything off and on" mindset, i completely reset (or so i though) TB, deleted all three accounts, uninstalled TB, reinstalled TB and set up the accounts again, starting with account 1. When i finally got it running i realized the issue was a checkmark regarding smtp authentification (also a known problem with office365 running on client software apparently) on the microsoft backend, and not on my computer. After that was set up, i tried adding my other two accounts. Now, this doesn´t work any more. I get timeouts in the setup process. I tried both, adding through the account hub and without it, it just does not work. All the credentials are obviously correct, so is the imap/server data input. So i think at least. Thanks for any suggestion in advance.