我正在尝试在 grails 中配置 zoho 邮件服务 mail-plugin .到目前为止，这是我的配置，

    grails { 
    mail { 
        host = "smtp.zoho.com" 
        port = 465 
        username = "email@valid.com" 
        password = "some-valid-password" 
        props = ["mail.smtp.auth":"true", 
                 "mail.smtp.starttls.enable":"true", 
                 "mail.smtp.socketFactory.port":"465", 
                 "mail.smtp.socketFactory.class":"javax.net.ssl.SSLSocketFactory", 
                 "mail.smtp.socketFactory.fallback":"false"] 
    } 
} 

这是我的服务方式。如果我把 gmail smtp 配置放在上面，上面的配置效果很好，所以我认为服务方法完全没有问题。 email@valid.com 也是 Zoho 中的注册邮箱，我可以使用 zoho dashboard 发送邮件。

 
 
    def sendImageProcessedNotification(User user, imageLink){ 
            try{ 
                if(user){ 
                    def receiver = user.email 
                    mailService.sendMail { 
                        async true 
                        to receiver 
                        subject "Subject" 
                        html "Html body" 
                    } 
                } 
            }catch(e){ 
                log.error(e) 
            } 
        } 
 

这是堆栈跟踪，

 
 
    2015-07-19 08:17:37,782 [pool-12-thread-1] ERROR mail.MailMessageBuilder  - Failed to send email 
    org.springframework.mail.MailSendException: Failed to close server connection after message failures; nested exception is javax.mail.MessagingException: Can't send command to SMTP host; 
      nested exception is: 
        java.net.SocketException: Connection closed by remote host. Failed messages: com.sun.mail.smtp.SMTPSendFailedException: 553 Relaying disallowed as  
    ; message exception details (1) are: 
    Failed message 1: 
    com.sun.mail.smtp.SMTPSendFailedException: 553 Relaying disallowed as  
 
        at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2133) 
        at com.sun.mail.smtp.SMTPTransport.finishData(SMTPTransport.java:1912) 
        at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1135) 
        at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:433) 
        at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:345) 
        at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:340) 
        at org.springframework.mail.javamail.JavaMailSender$send$0.call(Unknown Source) 
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45) 
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:110) 
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:122) 
        at grails.plugin.mail.MailMessageBuilder$_sendMessage_closure1.doCall(MailMessageBuilder.groovy:112) 
        at grails.plugin.mail.MailMessageBuilder$_sendMessage_closure1.doCall(MailMessageBuilder.groovy) 
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
        at java.lang.reflect.Method.invoke(Method.java:606) 
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90) 
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324) 
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207) 
        at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1121) 
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016) 
        at groovy.lang.Closure.call(Closure.java:423) 
        at groovy.lang.Closure.call(Closure.java:417) 
        at groovy.lang.Closure.run(Closure.java:504) 
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
        at java.lang.Thread.run(Thread.java:745) 
 

请您参考如下方法:

您只需在添加电子邮件逻辑的地方提及“setFrom()”属性。 示例:我使用 JavaMailSender 并使用 MimeMessage 发送电子邮件，因此在这种情况下，我将不得不提及“helper.setFrom()”。

P.S: 我试了很多方法，然后用这个解决了。