Introduction - If you have any usage issues, please Google them yourself
[the code for the course work, only to learn and exchange] this program uses the SMTP service according to the dictionary enumeration specified mailbox password, via the SMTP
The information returned by the server authentication password is correct
The dictionary file is dic.txt
The specified mailbox name in username.txt, support multiple user name
Break the user name and password will be recorded in the result.txt