JavaMail SMTPAddressFailedException：550 5.7.1无法中继...（Grails）

我正在尝试使用我的Grails应用程序（通过服务）使用javamail发送邮件 . 正在使用的from和to地址都具有组织域名 . 当通过命令行作为groovy脚本（在同一服务器上）运行时，相同的代码按预期工作 .

但是，在grails服务器上运行（在war模式下）会产生以下异常：

javax.mail.SendFailedException: Invalid Addresses;
  nested exception is:
    com.sun.mail.smtp.SMTPAddressFailedException: 550 5.7.1 Unable to relay for ---@---.com

    at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1873)
    at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1120)
    at javax.mail.Transport.send0(Transport.java:195)
    at javax.mail.Transport.send(Transport.java:124)
    at javax.mail.Transport$send.call(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:124)
    at cs.MailService.mail(MailService.groovy:66)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at

代码编写如下：

import javax.mail.internet.*
import javax.mail.*
import javax.activation.*

class Mailer {

def static mail(String toAddress, String subject, String body) {
        println "mail called"
        println "${toAddress}, ${subject}, ${body}"

        try {
            def fromAddress = "---@---.com"

            def properties = new Properties()
            properties.setProperty("mail.transport.protocol","smtp")
            properties.setProperty("mail.smtp.host","---------")

            def sessionInstance = Session.getDefaultInstance(properties,null);
            def msg = new MimeMessage(sessionInstance)

            def stringTokenizer = new StringTokenizer(toAddress,";")
            def toAddressList = []
            while(stringTokenizer.hasMoreElements()){
                toAddressList.add(new InternetAddress(stringTokenizer.nextElement().toString()));
            }
            def to = new InternetAddress[toAddressList.size()]
            to = (InternetAddress[]) toAddressList.toArray(to)
            msg.setRecipients(MimeMessage.RecipientType.TO,to)
            def from = new InternetAddress(fromAddress)
            msg.setFrom(from);
            msg.setSubject(subject)

            def mimeMultipart = new MimeMultipart()
            def mimeBodyPart = new MimeBodyPart()
            mimeBodyPart.setContent("<p style='font-family:calibri;color:blue;font-size:20px;text-align:center;'>"+body+"</p>", "text/html")
            mimeMultipart.addBodyPart(mimeBodyPart)

            msg.setContent(mimeMultipart)

            def transporter = sessionInstance.getTransport("smtp")
            transporter.connect()
            transporter.send(msg)
        } catch(Exception e) {
            e.printStackTrace()
        }
    }

    public static void main(String[] args) {
        def to="---@---.com"
        def subject="Call Scheduler Notification"
        def body='<font face="Segoe UI"><p><b><font color="#6B0667">Hi --- ---,<br><br>Your Call (id: 1281) Was Updated Successfully</b></font></p><table cellpadding="10" bgcolor="#B799B6"><caption><b><font color="#6B0667">Call Details</font></b></caption><tr><td><b>Title</b></td><td>---------</td></tr><tr><td><b>Start</b></td><td>---------</td></tr><tr><td><b>End</b></td><td>---------</td></tr><tr><td><b>Number</b></td><td>---------</td></tr><tr><td><b>Passcode</b></td><td>---------</td></tr><td><b>Special Instructions</b></td><td></td></tr><td><b>Callback Number</b></td><td>---------</td></tr></table><br><p><b><font color="#6B0667">Regards<br>Call Scheduler</b></font></p></font>'
        mail(to, subject, body);
    }

}

我如何通过此错误？

Update : 仍然不完全确定这里出了什么问题 . 但重置所有tcp / ip连接（从邮件服务器）解决了这个问题 .