My application is running fine on my local machine, but from server I don’t get an connection via ImapClient. I saw on the server I can Only reach the 993 port from outlook.office365.com, but not the 143 port. From my lo…... I saw on the server I can only reach the 993 port from outlook...4:51pm #2 @nishiichinoe You can only use the ports that are open...