Portnummer 143 and SSL/TLS not possible but required
My mail provider requires the usage of portnummer 143 together with encryption method SSL/TLS. Thunderbird automatically uses encryption method STARTTLS when port # 143 is entered. This is according to the recomended usage of special port numbers, but I need no correction from thunderbird, when my stupid provider wants to use ist differently.
Wšykne wótegrona (4)
First set the security to SSL/TLS, then type 143 in the port box manually.
I tried to follow your advice. I chose SSL/TLS and then manually changed the port number to 143. At that state the finish button is not selectable. When I click "test again" the port number 143 is changed again and the test fails.
I have solved the problem in a different way. I also have a MacBook Air. There I use Apple Mail and this program allows to create the account with the required settings. From this Macbook I can forward the mail to a different account in Outlook on my Windows desktop. Outlook doesn`t allow to create the account either, because IMAP assumes that the user name is equal to the E-mail address, which is not the case for my account. It was also possible to create the account successfully on my iPhone.
So I don't need Thunderbird any longer and will delete it. But thank you for trying to solve the problem.
Musyśo se pla swójogo konta pśizjawiś, aby na pśinoski wótegronił. Pšosym stajśo pšašanje, jolic hyšći njamaśo wužywaŕske konto.