i have the same problem. i just give up looking for a solution. i hope this problem does not happen when i change my application to the billling status.
2011/11/20 Jeff Gager <[email protected]> > I have written an app that sends email notifications to it's users > under some circumstances. Sometimes it works, other times it doesn't. > The code doesn't change and I am using the same small set of emails > addresses to send and receive emails so I can't see what I am doing > wrong. > > When it fails I get exceptions that begin like this; > > MessagingException: MailService IO failed (java.io.IOException: > Internal error) > javax.mail.SendFailedException: MailService IO failed > (java.io.IOException: Internal error) > at > > com.google.appengine.api.mail.stdimpl.GMTransport.sendMessage(GMTransport.java: > 253) > at javax.mail.Transport.send(Transport.java:95) > at javax.mail.Transport.send(Transport.java:48) > at com.hotf.server.EmailService$1.run(EmailService.java:119) > > So I thought I would set up a deferred task queue and configure it to > keep trying every 15 minutes until it works. > > Now emails fail with the same error for anything up to eight or nine > hours, then without reason or explanation the email service will > suddently start working and all the emails will be delivered. > > I have searched through this group and found and number of people have > had problems but I don't think any of them apply to the testing I am > doing. I am sending from the email address of the apps administrator > account, I have no quotes in my email addresses etc... > > The only lead I haven't followed up yet is that someone suggested the > email service is unreliable if you don't enable billing. So before I > take that step, can someone point out anything else I may be doing > wrong please. > > My code is; > > Properties props = new Properties(); > Session session = Session.getDefaultInstance(props, null); > > try { > > Message msg = new MimeMessage(session); > msg.setFrom(new InternetAddress("[email protected]", "SUBJECT")); > String email = a.getEmail().replace("\"","").replace("'", "").trim(); > msg.addRecipient(Message.RecipientType.TO,new InternetAddress(email, > a.getName())); > msg.setSubject(subject); > msg.setText(body); > log.info("Sending notification email to " + email); > Transport.send(msg); > > } catch (UnsupportedEncodingException e) { > > log.log(Level.SEVERE, "MessagingException: " + e.getMessage(), e); > e.printStackTrace(); > throw new RuntimeException(e); > > } catch (AddressException e) { > > log.log(Level.SEVERE, "MessagingException: " + e.getMessage(), e); > e.printStackTrace(); > throw new RuntimeException(e); > > } catch (MessagingException e) { > > log.log(Level.SEVERE, "MessagingException: " + e.getMessage(), e); > e.printStackTrace(); > throw new RuntimeException(e); > > } catch (Exception e) { > > log.severe(e.getMessage()); > e.printStackTrace(); > throw new RuntimeException(e); > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
