Hi, Thanks for the report, I was afraid of corner cases.
The relevant parts are: NOT working: > 2018-03-02 14:16:39,034 DEBUG [ImapConnection-36518] > davmail.exchange.ExchangeSession - Form based authentication detected > 2018-03-02 14:16:39,095 DEBUG [ImapConnection-36518] > davmail.exchange.ExchangeSession - Authentication form not found at > https://mail.example.com/owa/auth/logon.aspx?url=https%3a%2f%2fmail.example.com%2fowa%2f&reason=0, > trying default url > 2018-03-02 14:16:39,096 DEBUG [ImapConnection-36518] davmail - > executeFollowRedirects(/owa/auth/owaauth.dll) working; > 2018-03-02 14:14:43,386 DEBUG [ImapConnection-36476] > davmail.exchange.ExchangeSession - Form based authentication detected > 2018-03-02 14:14:43,428 DEBUG [ImapConnection-36476] > davmail.exchange.ExchangeSession - Detected script based logon, redirect to > form at > https://mail.example.com/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fmail.example.com%2fowa%2f > 2018-03-02 14:14:43,429 DEBUG [ImapConnection-36476] davmail - > executeFollowRedirects(https://mail.example.com/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fmail.example.com%2fowa%2f) It seems that the newer libhtmlcleaner fails to provide davmail with the js of your exchange login page. Can you provide the html of https://mail.example.com/owa/auth/logon.aspx?url=https%3a%2f%2fmail.example.com%2fowa%2f&reason=0 ? Or, the difference of the output of the following command for both version of libhtmlcleaner: $ java -jar /usr/share/java/htmlcleaner.jar "src=https://mail.example.com/owa/auth/logon.aspx?url=https%3a%2f%2fmail.example.com%2fowa%2f&reason=0"; Thanks, Alex
