邮件检查问题

Question

下面是我的代码，问题出的不知道什么原因，不知道是不是系统区别问题，在windows下面运行是可以正常检查出来，但是在Linux下面就不行了，求解答
[code="java"]package string.code;

import java.io.IOException;

import org.apache.commons.net.smtp.SMTPClient;
import org.apache.commons.net.smtp.SMTPReply;
import org.xbill.DNS.Lookup;
import org.xbill.DNS.Record;
import org.xbill.DNS.Type;

public class CheckEmailObj {

public static boolean checkEmail(String email) {
    DealString ds = new DealString();

    // if (!email.matches("[\\w\\.\\-]+@([\\w\\-]+\\.)+[\\w\\-]+")) {
    if (ds.emailFormat(email) == false) {
        // System.err.println("Format error");
        return false;
    }
    getProperties getset = new getProperties();
    String efrom = getset
            .readValue("gecxml/config.properties", "mail.from");
    String[] efromarray = efrom.split("@");
    String log = "";
    String host = "";
    String hostName = email.split("@")[1];
    Record[] result = null;
    SMTPClient client = new SMTPClient();

    try {
        System.out.println(hostName + "       hostName");

        System.out.println(Type.MX + "        Type.MX");
        // 查找MX记录
        Lookup lookup = new Lookup(hostName, Type.MX);

        System.out.println(lookup + "      lookup");

        lookup.run();

        System.out.println(lookup.getAnswers() + "     lookup.getAnswers()");

        System.out.println(lookup.getResult() + "      lookup.getResult()");

        System.out.println(Lookup.SUCCESSFUL + "       Lookup.SUCCESSFUL");

        if (lookup.getResult() != Lookup.SUCCESSFUL) {
            log += "找不到MX记录\n";
            return false;
        } else {
            result = lookup.getAnswers();
        }

        // 连接到邮箱服务器
        for (int i = 0; i < result.length; i++) {
            host = result[i].getAdditionalName().toString();

            client.connect(host);
            if (!SMTPReply.isPositiveCompletion(client.getReplyCode())) {
                client.disconnect();
                continue;
            } else {
                log += "MX record about " + hostName + " exists.\n";
                log += "Connection succeeded to " + host + "\n";
                break;
            }
        }
        log += client.getReplyString();

        // HELO cyou-inc.com

        client.login(efromarray[0].toString());

        log += ">HELO localhost\n";
        log += "=" + client.getReplyString();

        // MAIL FROM: <[e-mail]>

        client.setSender("[e-mail]");
        log += ">MAIL FROM: <[e-mail]>\n";
        log += "=" + client.getReplyString();

        // RCPT TO: <$email>
        client.addRecipient(email);
        log += ">RCPT TO: <" + email + ">\n";
        log += "=" + client.getReplyString();

        if (250 == client.getReplyCode()) {
            return true;
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            client.disconnect();
        } catch (IOException e) {
        }
        // 打印日志
        System.err.println(log);
    }
    return false;
}[/code]

Answer 1

既然不是程序问题，那有可能就是linux下的host映射，访问权限等等问题，这个你不要通过程序来找问题，通过你的机器来找问题，首先能上网是不行的，试试能不能ping通stmp.163.com再说。