I have Thunderbird, version, 115.6 on my iMac. Up until this morning I have had no problems. First when I used "Get Messages" this morning it kept telling me there was an error with my server. But after the error was fixed by contacting the server, Thunderbird was no longer able to connect to the server any more. I can send messages ok and they go through but I can't receive them since "Get Messages" no longer works. My Apple Mail program on my laptop works fine, so the server is back to working properly and I can pick my Thunderbird sent messages there. How can I get Thunderbird to connect to my server again for incoming messages? Thank you, Martha