KB-1981 Send Email smart service fails to send emails for some processes with a 'sender thread limit exceeded' error

Parmida Borhani — Fri, 23 Aug 2019 02:57:07 GMT

Current Revision posted to Appian Knowledge Base by Parmida Borhani on 8/23/2019 2:57:07 AM

Symptoms

When sending emails using the Send Email Smart Service, some emails fail with the following error present in the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

This error appears when using Microsoft Exchange Online. As of June 1, 2018, Microsoft's SMTP Authenticated Submission protocol has been changed in order to only allow three concurrent connections to the service per mailbox. Additional connections are rejected with the above error. The complete documentation regarding this limit can be found here.

Action

To avoid this error:

Use another mail server that can handle more concurrent connections.
If the issue is happening on an Appian Cloud environment, use the Appian Cloud mail server instead of an external mail server.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: August 2019

Tags: email, smart-services, integration, processes, infrastructure

KB-1981 Send Email smart service fails to send emails for some processes with a 'sender thread limit exceeded' error

Parmida Borhani — Fri, 23 Aug 2019 02:56:16 GMT

Revision 10 posted to Appian Knowledge Base by Parmida Borhani on 8/23/2019 2:56:16 AM

Symptoms

When sending emails using the Send Email Smart Service, some emails fail with the following error present in the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

This error appears when using Microsoft Exchange Online. As of June 1, 2018, Microsoft's SMTP Authenticated Submission protocol has been changed in order to only allow three concurrent connections to the service per mailbox. Additional connections are rejected with the above error.

The complete documentation regarding this limit can be found here.

Action

To avoid this error:

Use another mail server that can handle more concurrent connections.
If the issue is happening on an Appian Cloud environment, use the Appian Cloud mail server instead of an external mail server.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: August 2019

Tags: email, smart-services, integration, processes, infrastructure

DRAFT KB-XXXX Send Email smart service fails to send emails for some processes with a 'sender thread limit exceeded' error

Parmida Borhani — Thu, 22 Aug 2019 03:52:21 GMT

Revision 9 posted to Appian Knowledge Base by Parmida Borhani on 8/22/2019 3:52:21 AM

Symptoms

When sending emails using the Send Email Smart Service, some emails fail with the following error present in the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

This error appears when using Microsoft Exchange Online. As of June 1, 2018, Microsoft's SMTP Authenticated Submission protocol has been changed in order to only allow three concurrent connections to the service per mailbox. Additional connections are rejected with the above error.

The complete documentation regarding this limit can be found here.

Action

To avoid this error:

Use another mail server that can handle more concurrent connections.
If the issue is happening on an Appian Cloud environment, use the Appian Cloud mail server instead of an external mail server.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: August 2019

Tags: email, integration, processes, infrastructure, Cloud

DRAFT KB-XXXX Send Email smart service fails to send emails for some processes with a 'sender thread limit exceeded' error

Parmida Borhani — Thu, 22 Aug 2019 03:49:01 GMT

Revision 8 posted to Appian Knowledge Base by Parmida Borhani on 8/22/2019 3:49:01 AM

Symptoms

When sending emails using the Send Email Smart Service, some emails fail with the following error present in the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

This error appears when using Microsoft Exchange Online. As of June 1, 2018, Microsoft's SMTP Authenticated Submission protocol has been changed in order to only allow three concurrent connections to the service per mailbox. Additional connections are rejected with the above error.

The complete documentation regarding this limit can be found here.

Action

To avoid this error:

Use another mail server that can handle more concurrent connections.
If the issue is happening on a Cloud environment, use the Appian Cloud mail server instead of an external mail server.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: August 2019

Tags: email, integration, processes, infrastructure, Cloud

DRAFT KB-XXXX Send Email Smart Service fails to send emails for some processes

Diaba Konate — Tue, 20 Aug 2019 11:45:33 GMT

Revision 7 posted to Appian Knowledge Base by Diaba Konate on 8/20/2019 11:45:33 AM

Symptoms

When sending emails using the Send Email Smart Service, some emails fail with the following error present in the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

This error appears when using Microsoft Exchange Online. Since June 1, 2018, their SMTP Authenticated Submission protocol has been changed in order to only allow three concurrent connections to the service per mailbox. Additional connections are rejected with the above error.

The complete documentation regarding this limit can be found on this page.

Action

To avoid this error:

Use another mail server that can handle more concurrent connections.
If the issue is happening on a Cloud environment, use the Appian Cloud mail server instead of an external mail server.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: August 2019

Tags: email, processes, infrastructure, Cloud

DRAFT KB-XXXX Send Email Smart Service fails to send emails for some processes

Diaba Konate — Tue, 20 Aug 2019 11:44:40 GMT

Revision 6 posted to Appian Knowledge Base by Diaba Konate on 8/20/2019 11:44:40 AM

Symptoms

When sending emails using the Send Email Smart Service, some emails fail with the following error present in the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

Action

To avoid this error:

Use another mail server that can handle more concurrent connections.
If the issue is happening on a Cloud environment, use the Appian Cloud mail server instead of an external mail server.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: May 2019

Tags: email, processes, infrastructure, Cloud

DRAFT KB-XXXX Send email fails for some processes

Diaba Konate — Wed, 22 May 2019 15:10:30 GMT

Revision 5 posted to Appian Knowledge Base by Diaba Konate on 5/22/2019 3:10:30 PM

Symptoms

When sending emails using the send email smart services, some will fail with the following error present on the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

Action

To avoid this error, here are some solutions that can be implemented:

Use another mail server that can handle more concurrent connections.
If the issue is happening on a Cloud environment, use the Appian Cloud mail server instead of an external mail server.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: May 2019

Tags: email, processes, infrastructure, Cloud

DRAFT KB-XXXX Send email fails for some processes

Diaba Konate — Thu, 14 Mar 2019 13:13:22 GMT

Revision 1 posted to Appian Knowledge Base by Diaba Konate on 3/14/2019 1:13:22 PM

Symptoms

When sending emails using the send email smart services, some will fails to be sent. The following error can be seen on the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

Action

To avoid this error, here are some solutions that can be implemented:

Use another mail server that is designed to send large amounts of emails.
If the issue is happening on a Cloud environment, use the mail server provided instead of an on-premise one.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: March 2019

Tags: email, processes, infrastructure, Cloud

DRAFT KB-XXXX Send email fails for some processes

Diaba Konate — Thu, 14 Mar 2019 09:15:47 GMT

Revision 4 posted to Appian Knowledge Base by Diaba Konate on 3/14/2019 9:15:47 AM

Symptoms

When sending emails using the send email smart services, some will fail with the following error present on the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

Action

To avoid this error, here are some solutions that can be implemented:

Use another mail server that is designed to send large amounts of emails.
If the issue is happening on a Cloud environment, use the mail server provided instead of an on-premise one.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: March 2019

Tags: email, processes, infrastructure, Cloud

DRAFT KB-XXXX Send email fails for some processes

Diaba Konate — Thu, 14 Mar 2019 09:14:53 GMT

Revision 3 posted to Appian Knowledge Base by Diaba Konate on 3/14/2019 9:14:53 AM

Symptoms

When sending emails using the send email smart services, some will fail with the following error present on the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

Action

To avoid this error, here are some solutions that can be implemented:

Use another mail server that is designed to send large amounts of emails.
If the issue is happening on a Cloud environment, use the mail server provided instead of an on-premise one.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: March 2019

Tags: email, processes, infrastructure, Cloud

DRAFT KB-XXXX Send email fails for some processes

Diaba Konate — Thu, 14 Mar 2019 09:14:03 GMT

Revision 2 posted to Appian Knowledge Base by Diaba Konate on 3/14/2019 9:14:03 AM

Symptoms

When sending emails using the send email smart services, some will fails with the following error present on the application server log:

ERROR com.appiancorp.ap2.mail.Mail - Could not send mail via <SMTP_SERVER>:<smtp_port> to
ERROR com.appiancorp.process.runtime.activities.SendEmailActivity - com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]
com.sun.mail.smtp.SMTPSendFailedException: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded [Hostname=<HOSTNAME>]

Cause

Action

To avoid this error, here are some solutions that can be implemented:

Use another mail server that is designed to send large amounts of emails.
If the issue is happening on a Cloud environment, use the mail server provided instead of an on-premise one.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: March 2019

Tags: email, processes, infrastructure, Cloud