[Bug] - Android failed to authenticate smtp login, but iOS is ok

[newbieyhj]

Summary
smtp authentication fails.

Platform(s)
Android

Happens on Mail Server
smtp calls mailesmtp_auth_sasl(mSmtp, "LOGIN",...) Failed, error 17 is returned，
however iOS is OK.

Piece of code

In the login() method of  MCSMTPSession.cpp:
r = mailesmtp_auth_sasl(mSmtp, "LOGIN",
                                    MCUTF8(mHostname),
                                    NULL,
                                    NULL,
                                    MCUTF8(mUsername), MCUTF8(mUsername),
                                    MCUTF8(mPassword), NULL);

Actual outcome
r return errorcode is 17.

Connection Logs

Expected outcome
r return 0.

Link to sample code on GitHub reproducing the issue (a full Xcode project):

https://