web applications - Sending email from java -


i trying send confirmation email users of web application, getting following error:

pkix path building failed: sun.security.provider.certpath.suncertpathbuilderexception: unable find valid certification path requested target

this java class:

package it.bcsoft.onlinestore.mail; import java.util.properties; import javax.mail.messagingexception; import javax.mail.session; import javax.mail.transport; import javax.mail.internet.addressexception; import javax.mail.internet.internetaddress; import javax.mail.internet.mimemessage; import javax.mail.internet.mimemessage.recipienttype;  public class emailsender {      public static boolean sendemail(string from, string pass, string message, string[] to)     {         string host="smtp.gmail.com";         properties props= system.getproperties();         props.put("mail.smtp.starttls.enable", "true");         props.put("mail.smtp.host", host);         props.put("mail.smtp.user", from);         props.put("mail.smtp.password", pass);         props.put("mail.smtp.port", 25);         props.put("mail.smtp.auth", "true");         session session= session.getdefaultinstance(props, null);         mimemessage mime= new mimemessage(session);         try {             mime.setfrom(new internetaddress(from));             internetaddress[] toaddress= new internetaddress[to.length];             for(int i=0; i<to.length; i++)             {                 toaddress[i]= new internetaddress(to[i]);             }             for(int i=0; i<toaddress.length;i++)             {                 mime.addrecipient(recipienttype.to, toaddress[i]);             }             mime.setsubject("mail onlinestore");             mime.settext(message);             transport transport= session.gettransport("smtp");             transport.connect(host, from, pass);             transport.sendmessage(mime, mime.getallrecipients());             transport.close();             return true;         } catch (addressexception e) {             // todo auto-generated catch block             e.printstacktrace();         } catch (messagingexception e) {             // todo auto-generated catch block             e.printstacktrace();         }         return false;     } }

i not have smtp server installed on pc , using java 1.7

make sure using right port. use gmail's smtp server via tls, have use port 587.

source

have @ this blog post on how build smtp connection gmail.


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