Zimbra安装成功后，邮件发送失败！！急！！发生错误 (mail.TRY_AGAIN)，原因不详。

Body: {
  SendMsgRequest: {
    _jsns: "urn:zimbraMail",
    m: {
      e: [
        0: {
          a: "guotao@xo.com",
          add: "1",
          t: "t"
         },
        1: {
          a: "guotao1985@126.com",
          add: "1",
          t: "c"
         },
        2: {
          a: "guotao@xo.com",
          p: "tao guo",
          t: "f"
         }
       ],
      idnt: "24519bca-94b9-4dbe-b8e7-a751aa104ef7",
      mp: [
        0: {
          content: {
            _content: "testtest"
           },
          ct: "text/plain"
         }
       ],
      su: {
        _content: "test"
       }
     },
    suid: 1305009104171
   }
 },
Header: {
  context: {
    _jsns: "urn:zimbra",
    account: {
      _content: "guotao@xo.com",
      by: "name"
     },
    authToken: "(removed)",
    session: {
      _content: 16,
      id: 16
     },
    userAgent: {
      name: "ZimbraWebClient - IE7 (Win)",
      version: "7.1.0_GA_3140"
     }
   }
 }