python - Error sending Email (Gmail) from crontab but works from Java class -

i got following code working if launch java class python script

script

/usr/bin/python /home/tripwire/email/notify.py 

java class

public static void main(string[] args) {         string = user_name;         string pass = password;         string[] = { recipient }; // list of recipient email addresses         string subject = "hotspots area detected";         string body = "bla bla bla...";           sendfromgmail(from, pass, to, subject, body);     }      private static void sendfromgmail(string from, string pass, string[] to, string subject, string body) {         properties props = system.getproperties();         string host = "smtp.gmail.com";         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", "587");         props.put("mail.smtp.auth", "true");          session session = session.getdefaultinstance(props);         mimemessage message = new mimemessage(session);          try {             message.setfrom(new internetaddress(from));             internetaddress[] toaddress = new internetaddress[to.length];              // array of addresses             for( int = 0; < to.length; i++ ) {                 toaddress[i] = new internetaddress(to[i]);             }              for( int = 0; < toaddress.length; i++) {                 message.addrecipient(message.recipienttype.to, toaddress[i]);             }              message.setsubject(subject);             message.settext(body);             transport transport = session.gettransport("smtp");             transport.connect(host, from, pass);             transport.sendmessage(message, message.getallrecipients());             transport.close();         }         catch (addressexception ae) {             ae.printstacktrace();         }         catch (messagingexception me) {             me.printstacktrace();         }     } 

but when call python script thru cron job following error in log:

mar 10 09:50:01 ubuntu-dashboard-service cron[3586]: (tripwire) cmd (/usr/bin/python /home/tripwire/email/notify.py) mar 10 09:50:06 ubuntu-dashboard-service cron[3584]: (cron) error (grandchild #3586 failed exit status 1) mar 10 09:50:07 ubuntu-dashboard-service sendmail[3589]: s2a6o643003589: from=tripwire, size=783, class=0, nrcpts=1, msgid=<201403100650.s2a6o643003589@ubuntu-dashboard-service.qf.org.qa>, relay=tripwire@localhost mar 10 09:50:07 ubuntu-dashboard-service sm-mta[3590]: s2a6o79o003590: from=<tripwire@ubuntu-dashboard-service.qf.org.qa>, size=1131, class=0, nrcpts=1, msgid=<201403100650.s2a6o643003589@ubuntu-dashboard-service.qf.org.qa>, proto=esmtp, daemon=mta-v4, relay=localhost [127.0.0.1] mar 10 09:50:07 ubuntu-dashboard-service sendmail[3589]: s2a6o643003589: to=tripwire, ctladdr=tripwire (1000/1000), delay=00:00:01, xdelay=00:00:00, mailer=relay, pri=30783, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=sent (s2a6o79o003590 message accepted delivery) mar 10 09:50:07 ubuntu-dashboard-service sm-mta[3592]: s2a6o79o003590: to=<tripwire@ubuntu-dashboard-service.qf.org.qa>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=121131, relay=ubuntu-dashboard-service.qf.org.qa. [10.153.33.140], dsn=4.0.0, stat=deferred: connection refused ubuntu-dashboard-service.qf.org.qa. 

email, python , java class , crontab seem work fine...so must in permission of sending email crontab. different?

i running whole thing on ubuntu 11.04.

thanks,

edit

added email part python directly in order avoid cronjob issues. works!

added email part python directly in order avoid cronjob issues. works!