If you use JavaMail api provided by Sun then you can get the latest api from Sun Downloads.
\nJavaMail uses properties to load all configuration to the program.
\nYou must specify:
\n# The hostname or IP address of your SMTP server
\n mail.smtp.host=smtp.duke.java.sun.com <\/p>\n
# You get lots of debugging information if
\n # this is turned on. Comment this line to turn
\n # it off.
\n mail.debug=true <\/p>\n
# The To email address
\n ttapr2004.to=duke@duke.java.sun.com <\/p>\n
# The From email address
\n ttapr2004.from=duke@j2ee_fanclub.java.su… <\/p>\n
You can easily connect without authenticate to the SMTP server. But you may experience that you cannot send email from your java program: If your server requires authentication this igot it from internet private static final String SMTP_HOST_NAME = "myserver.smtphost.com"; private static final String emailMsgTxt = \/\/ Add List of Email address to who email needs to be sent to public static void main(String args[]) throws Exception { public void postMail(String recipients[], String subject, \/\/Set the host smtp address Authenticator auth = new SMTPAuthenticator(); session.setDebug(debug); <\/p>\n \/\/ create a message \/\/ set the from and to address InternetAddress[] addressTo = new InternetAddress[recipients.length]; \/\/ Setting the Subject and Content Type \/** public PasswordAuthentication getPasswordAuthentication() { \u0391\u03c0\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03b5\u03c5\u03b8\u03c5\u03bd\u03ce\u03bd - \u039f\u03b9 \u03b1\u03c0\u03cc\u03c8\u03b5\u03b9\u03c2 \u03c0\u03bf\u03c5 \u03b5\u03ba\u03c6\u03c1\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03ac\u03c1\u03b8\u03c1\u03bf \u03c0\u03b1\u03c1\u03ad\u03c7\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03ad\u03bd\u03b1 3\u03bf \u03bc\u03ad\u03c1\u03bf\u03c2 \u03ba\u03b1\u03b9 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03bc\u03b7\u03bd \u03c4\u03b1\u03b9\u03c1\u03b9\u03ac\u03b6\u03bf\u03c5\u03bd \u03bc\u03b5 \u03b5\u03ba\u03b5\u03af\u03bd\u03b5\u03c2 \u03c4\u03b7\u03c2 \u03b9\u03c3\u03c4\u03bf\u03c3\u03b5\u03bb\u03af\u03b4\u03b1\u03c2 \u03bc\u03b1\u03c2<\/p>","protected":false},"excerpt":{"rendered":" \u0395\u03ac\u03bd \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b5 \u03c4\u03bf JavaMail api \u03c0\u03bf\u03c5 \u03c0\u03b1\u03c1\u03ad\u03c7\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7 Sun, \u03c4\u03cc\u03c4\u03b5 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af\u03c4\u03b5 \u03bd\u03b1 \u03bb\u03ac\u03b2\u03b5\u03c4\u03b5 \u03c4\u03bf \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03bf api \u03b1\u03c0\u03cc \u03c4\u03bf Sun Downloads. \u03a4\u03bf JavaMail \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b5\u03af \u03b9\u03b4\u03b9\u03cc\u03c4\u03b7\u03c4\u03b5\u03c2 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c6\u03bf\u03c1\u03c4\u03ce\u03c3\u03b5\u03b9 \u03cc\u03bb\u03b5\u03c2 \u03c4\u03b9\u03c2 \u03c1\u03c5\u03b8\u03bc\u03af\u03c3\u03b5\u03b9\u03c2 \u03c3\u03c4\u03bf \u03c0\u03c1\u03cc\u03b3\u03c1\u03b1\u03bc\u03bc\u03b1. \u03a0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03ba\u03b1\u03b8\u03bf\u03c1\u03af\u03c3\u03b5\u03c4\u03b5: # \u03a4\u03bf \u03cc\u03bd\u03bf\u03bc\u03b1 \u03ba\u03b5\u03bd\u03c4\u03c1\u03b9\u03ba\u03bf\u03cd \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u03c3\u03c4\u03ae \u03ae \u03c4\u03b7 \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 IP \u03c4\u03bf\u03c5 \u03b4\u03b9\u03b1\u03ba\u03bf\u03bc\u03b9\u03c3\u03c4\u03ae SMTP mail.smtp.host=smtp.duke.java.sun.com # \u039c\u03c0\u03bf\u03c1\u03b5\u03af\u03c4\u03b5 \u03bd\u03b1 \u03bb\u03ac\u03b2\u03b5\u03c4\u03b5 \u03c0\u03bf\u03bb\u03bb\u03ad\u03c2 \u03c0\u03bb\u03b7\u03c1\u03bf\u03c6\u03bf\u03c1\u03af\u03b5\u03c2 \u03b5\u03bd\u03c4\u03bf\u03c0\u03b9\u03c3\u03bc\u03bf\u03cd \u03c3\u03c6\u03b1\u03bb\u03bc\u03ac\u03c4\u03c9\u03bd \u03b1\u03bd # \u03b1\u03c5\u03c4\u03cc \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03bd\u03b5\u03c1\u03b3\u03bf\u03c0\u03bf\u03b9\u03b7\u03bc\u03ad\u03bd\u03bf. Read more about Access SMTP Server – how can i authenticate mail whatever i am sending with the smtp server?<\/span>[...]<\/a><\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-65","post","type-post","status-publish","format-standard","hentry","category-smtp-questions"],"_links":{"self":[{"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/posts\/65","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/comments?post=65"}],"version-history":[{"count":1,"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/posts\/65\/revisions"}],"predecessor-version":[{"id":66,"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/posts\/65\/revisions\/66"}],"wp:attachment":[{"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/media?parent=65"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/categories?post=65"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.smtp-server.net\/el\/wp-json\/wp\/v2\/tags?post=65"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n1. Your ip may be blocked by firewall to Access SMTP Server<\/a>
\n2. Your SMTP server block senders address, to address and maybe your ip.
\n3. Your SMTP server requires authentication <\/p>\n
\n————————————–…
\npublic class SendMailUsingAuthentication { <\/p>\n
\n private static final String SMTP_AUTH_USER = "myusername";
\n private static final String SMTP_AUTH_PWD = "mypwd"; <\/p>\n
\n "Online Order Confirmation Message. Also include the Tracking Number.";
\n private static final String emailSubjectTxt = "Order Confirmation Subject";
\n private static final String emailFromAddress = "sudhir@javacommerce.com"; <\/p>\n
\n private static final String[] emailList = {
\n "mark@yahoo.com", "robin@javacommerce.com"}; <\/p>\n
\n SendMailUsingAuthentication smtpMailSender = new
\n SendMailUsingAuthentication();
\n smtpMailSender.postMail(emailList, emailSubjectTxt, emailMsgTxt,
\n emailFromAddress);
\n System.out.println("Sucessfully Sent mail to All Users");
\n } <\/p>\n
\n String message, String from) throws MessagingException {
\n boolean debug = false; <\/p>\n
\n Properties props = new Properties();
\n props.put("mail.smtp.host", SMTP_HOST_NAME);
\n props.put(\"mail.smtp.auth\", \"true\"),; <\/p>\n
\n Session session = Session.getDefaultInstance(props, auth); <\/p>\n
\n \u039c\u03ae\u03bd\u03c5\u03bc\u03b1 msg = new MimeMessage(session),; <\/p>\n
\n InternetAddress addressFrom = new InternetAddress(from);
\n msg.setFrom(addressFrom); <\/p>\n
\n for (int i = 0; i < recipients.length; i++) {
\n addressTo[i] = new InternetAddress(recipients[i]);
\n }
\n msg.setRecipients(Message.RecipientType…. addressTo); <\/p>\n
\n msg.setSubject(subject),;
\n msg.setContent(message, "text\/plain");
\n Transport.send(msg),;
\n } <\/p>\n
\n * SimpleAuthenticator is used to do simple authentication
\n * when the SMTP server requires it.
\n *\/
\n private class SMTPAuthenticator
\n extends javax.mail.Authenticator { <\/p>\n
\n String username = SMTP_AUTH_USER;
\n String password = SMTP_AUTH_PWD;
\n return new PasswordAuthentication(username, password),;
\n }
\n }
\n}
\n————————————–…<\/p>\n