之前一直在做本地郵件服務器發送，可是沒有成功，都說什么反解析失敗什么的原因，具體的也不太清楚，

最近又學習了用java做郵件發送服務器，還真的成功了分享給大家(以下發送只包括文字內容，不包括附加及圖片，如有不明白的可以聯系我)

java運行：main運行測試的話，包需要java2E1.4

javaweb運行：包需要javaEE5

運行調用SendMailGUI中方法run("發送方地址（隨便起名，但要符合郵件樣式@.）","接收方地址","發送主題","發送內容")

類：SendMailGUI

packageaction;

importjava.util.Arrays;

importjava.util.Hashtable;

importjavax.naming.Context;

importjavax.naming.directory.DirContext;

importjavax.naming.directory.InitialDirContext;

importjavax.naming.directory.Attributes;

importjavax.naming.NamingEnumeration;

importjavax.naming.directory.Attribute;

importjava.io.ByteArrayOutputStream;

importjava.io.FileInputStream;

importjava.io.IOException;

importjava.util.Properties;

importjavax.mail.Session;

importjavax.mail.internet.MimeMessage;

importjavax.mail.internet.InternetAddress;

importjavax.mail.Message;

importjavax.mail.internet.MimeMultipart;

importjavax.mail.BodyPart;

importjavax.mail.internet.MimeBodyPart;

importjavax.activation.FileDataSource;

importjavax.activation.DataHandler;

importjavax.mail.internet.MimeUtility;

importjavax.mail.Multipart;

importjava.util.Date;

importjavax.mail.Transport;

publicclassSendMailGUI{

/**serialVersionUID*/

StringimagePath=null;

javax.swing.JProgressBarbar=newjavax.swing.JProgressBar();

publicintrun(Stringfrom,Stringto,Stringtitle,Stringcontent){

MailMessagemesg=newMailMessage(from,to,title,content);

try

{

sendMail(mesg);

return1;

}catch(Exceptionex){

return0;

}

}

privatevoidsendMail(MailMessagemesg)throwsException

{

//DNS服務器

Stringdns="dns://";

//得到接受方的服務器域名

Stringdomain=mesg.getTo().substring(mesg.getTo().indexOf('@')+1);

Hashtableenv=newHashtable();

env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.dns.DnsContextFactory");

env.put(Context.PROVIDER_URL,dns);

DirContextctx=newInitialDirContext(env);

Attributesattrs=ctx.getAttributes(domain,newString[]{"MX"});

if(attrs==null||attrs.size()<=0){

thrownewjava.lang.IllegalStateException("錯誤:你的DNS服務器沒有相應的MX記錄!");

}

NamingEnumerationservers=attrs.getAll();

//列出所有郵件服務器：

StringsmtpHost=null;

booleanisSend=false;

St