发送邮件出错，帮我看看，谢谢 400 请求报错 

DEBUG: setDebug: JavaMail version 1.4.3 DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc] DEBUG SMTP: useEhlo true, useAuth true DEBUG SMTP: useEhlo true, useAuth true DEBUG SMTP: trying to connect to host "exch07.wiseknit.com.cn", port 25, isSSL false 220 exch07.wiseknit.com.cn Microsoft ESMTP MAIL Service ready at Wed, 16 Nov 2011 15:16:44 +0800 DEBUG SMTP: connected to host "exch07.wiseknit.com.cn", port: 25 EHLO 20111009-1950 250-exch07.wiseknit.com.cn Hello [172.168.1.172] 250-SIZE 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-STARTTLS 250-X-ANONYMOUSTLS 250-AUTH NTLM 250-X-EXPS GSSAPI NTLM 250-8BITMIME 250-BINARYMIME 250-CHUNKING 250-XEXCH50 250 XRDST DEBUG SMTP: Found extension "SIZE", arg "" DEBUG SMTP: Found extension "PIPELINING", arg "" DEBUG SMTP: Found extension "DSN", arg "" DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg "" DEBUG SMTP: Found extension "STARTTLS", arg "" DEBUG SMTP: Found extension "X-ANONYMOUSTLS", arg "" DEBUG SMTP: Found extension "AUTH", arg "NTLM" DEBUG SMTP: Found extension "X-EXPS", arg "GSSAPI NTLM" DEBUG SMTP: Found extension "8BITMIME", arg "" DEBUG SMTP: Found extension "BINARYMIME", arg "" DEBUG SMTP: Found extension "CHUNKING", arg "" DEBUG SMTP: Found extension "XEXCH50", arg "" DEBUG SMTP: Found extension "XRDST", arg "" DEBUG SMTP: Attempt to authenticate DEBUG SMTP: check mechanisms: LOGIN PLAIN DIGEST-MD5 NTLM
DEBUG SMTP: mechanism LOGIN not supported by server DEBUG SMTP: mechanism PLAIN not supported by server DEBUG SMTP: mechanism DIGEST-MD5 not supported by server java.lang.ClassNotFoundException: jcifs/ntlmssp/Type1Message  at java.lang.Class.forName0(Native Method)  at java.lang.Class.forName(Class.java:169)  at com.sun.mail.auth.Ntlm.generateType1Msg(Ntlm.java:65)  at com.sun.mail.smtp.SMTPTransport$NtlmAuthenticator.getInitialResponse(SMTPTransport.java:784)  at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:623)  at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:583)  at javax.mail.Service.connect(Service.java:313)  at javax.mail.Service.connect(Service.java:172)  at javax.mail.Service.connect(Service.java:121)  at javax.mail.Transport.send0(Transport.java:190)  at javax.mail.Transport.send(Transport.java:120)  at EmailSender.send(EmailSender.java:103)  at EmailSender.main(EmailSender.java:32) AUTH NTLM 334
java.lang.ClassNotFoundException: jcifs/ntlmssp/Type2Message  at java.lang.Class.forName0(Native Method)  at java.lang.Class.forName(Class.java:169)  at com.sun.mail.auth.Ntlm.generateType3Msg(Ntlm.java:105)  at com.sun.mail.smtp.SMTPTransport$NtlmAuthenticator.doAuth(SMTPTransport.java:794)  at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:641)  at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:583)  at javax.mail.Service.connect(Service.java:313)  at javax.mail.Service.connect(Service.java:172)  at javax.mail.Service.connect(Service.java:121)  at javax.mail.Transport.send0(Transport.java:190)  at javax.mail.Transport.send(Transport.java:120)  at EmailSender.send(EmailSender.java:103)  at EmailSender.main(EmailSender.java:32) javax.mail.AuthenticationFailedException: 334
 at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:648)  at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:583)  at javax.mail.Service.connect(Service.java:313)  at javax.mail.Service.connect(Service.java:172)  at javax.mail.Service.connect(Service.java:121)  at javax.mail.Transport.send0(Transport.java:190)  at javax.mail.Transport.send(Transport.java:120)  at EmailSender.send(EmailSender.java:103)  at EmailSender.main(EmailSender.java:32)