问题描述

web项目中页面修改javamail发件人信息后发邮件失败

我们的web项目使用javamail发送邮件。页面可修改发送邮件的服务器、发件人信息，但是现在在页面修改发件人邮箱地址和密码之后，发送邮件失败。重起Tomcat服务器之后，又可以正常发送邮件，各位大神，有谁知道为什么呢？

public boolean sendMail(String subject String body){      Properties props = new Properties();      props.put(""mail.smtp.host"" server);      props.put(""mail.smtp.auth"" needAuth);      props.put(""mail.smtp.sender"" sender);      props.put(""mail.smtp.password"" password);      // 判断是否需要身份认证      MailAuthenticator authenticator = null;      if (needAuth) {          authenticator = new MailAuthenticator(sender password);      }      try {          Session session = Session.getDefaultInstance(props authenticator);          MimeMessage message = new MimeMessage(session);          InternetAddress from = null;          if(null != sender && !"""".equals(sender)){              from = new InternetAddress(sender);          }          message.setFrom(from);          String[] str = to.split("");          InternetAddress[] address = new InternetAddress[str.length];           for (int i = 0; i < str.length; i++) {              address[i] = new InternetAddress(str[i]);          }          message.setRecipients(Message.RecipientType.TOaddress);          message.setSubject(subjectUTF-8"");          message.setSentDate(new Date());          MimeBodyPart mbp = new MimeBodyPart();          mbp.setContent(bodytext/html;charset=UTF-8"");          Multipart multipart = new MimeMultipart();          multipart.addBodyPart(mbp);          message.setContent(multipart);          Transport.send(message);          return true;      } catch (Exception e) {          return false;      }  

修改发件人之后，报如下异常：

com.sun.mail.smtp.SMTPSendFailedException: 550 Invalid User 684966a9-37c9-4b09-ba32-ea282cf46b58
;
nested exception is:
com.sun.mail.smtp.SMTPSenderFailedException: 550 Invalid User 684966a9-37c9-4b09-ba32-ea282cf46b58

at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2057)
at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1580)
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1097)
at javax.mail.Transport.send0(Transport.java:195)
at javax.mail.Transport.send(Transport.java:146)

解决方案

是不是tomcat缓存的问题