Debugging IMAP access of Yahoo in 2018
问题 I am unable to authenticate IMAP with Yahoo and cannot pinpoint the cause. Can anyone help me to get more information other than the exception below? "javax.mail.AuthenticationFailedException: [AUTHENTICATIONFAILED] Invalid credentials (Failure)" Yahoo seems to have had many revisions to authentication over the years so that is why I put the current year in the title. Here is my setup: On Yahoo: I have enabled less secure apps; I have checked and recheck credentials. On my linux box: I have