Answers to: Max thread limit exceeded when using office365 SMTP serverhttps://answers.axonivy.com/questions/4143/max-thread-limit-exceeded-when-using-office365-smtp-server<p>Hi,</p> <p>When using Office365 SMTP server to send email with IVY (daily summary), I got an error from the SMTP server :</p> <p>com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=VI1P190MB0189.EURP190.PROD.OUTLOOK.COM]</p> <p>This error occurs because IVY try to send more then 3 emails at the same time (using multiple threads). I didn't find any configuration I can change in the system properties to limit the number of thread used.</p> <p>Do you have any workaround for this ?</p> <p>Tx in advance.</p> <p>Fabien Duay</p>enWed, 13 Nov 2019 07:42:22 -0500Answer by Reguel Wermelingerhttps://answers.axonivy.com/questions/4143/max-thread-limit-exceeded-when-using-office365-smtp-server/4167<p>Just looked into the source of axon.ivy 5.1 and did not find any configuration that allows to reduce the pressure on the remote SMTP.</p>Reguel WermelingerWed, 13 Nov 2019 07:42:22 -0500https://answers.axonivy.com/questions/4143/max-thread-limit-exceeded-when-using-office365-smtp-server/4167Comment by fabien on fabien's questionhttps://answers.axonivy.com/questions/4143/max-thread-limit-exceeded-when-using-office365-smtp-server#4166<p>push-up comment</p>fabienTue, 12 Nov 2019 08:03:14 -0500https://answers.axonivy.com/questions/4143/max-thread-limit-exceeded-when-using-office365-smtp-server#4166Comment by fabien on fabien's questionhttps://answers.axonivy.com/questions/4143/max-thread-limit-exceeded-when-using-office365-smtp-server#4145<p>The Ivy server is in version 5.1.13</p>fabienWed, 06 Nov 2019 04:20:20 -0500https://answers.axonivy.com/questions/4143/max-thread-limit-exceeded-when-using-office365-smtp-server#4145Comment by Reguel Wermelinger on fabien's questionhttps://answers.axonivy.com/questions/4143/max-thread-limit-exceeded-when-using-office365-smtp-server#4144<p>many improvements have been done in the past on the mail send stack and on the configuration capabilities too. therefore, we need the ivy version you are working with in order to give any advise.</p>Reguel WermelingerWed, 06 Nov 2019 04:16:31 -0500https://answers.axonivy.com/questions/4143/max-thread-limit-exceeded-when-using-office365-smtp-server#4144