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Knowledge Base

Diagnosing why VMware vCenter Server is not sending email alerts (1004070)

Last Updated: 1/19/2017Categories: TroubleshootingTotal Views: 101256Language:
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Symptoms

Email alerts are not sent from vCenter Server.

vCenter Server fails to send email alerts.

In the C:\ProgramData\VMware\VMware VirtualCenter\Logs\vpxd.log in 5.x and earlier, C:\ProgramData\VMware\vCenterServer\logs\vmware-vpx\vpxd.log in 6.0 file, you see an error similar to:

[02536 error 'Default'] [VpxdMail] Failed to send the mail to SMTP server mail_server at port 25. Error=The transport failed to connect to the server.

Purpose

This article provides information on eliminating common causes of this issue by verifying the configuration of the mail server, networking, and third-party services.

Resolution

Validate that each troubleshooting step is true for your environment. Each step provides instructions or a link to a document to eliminate possible causes and take corrective action, if necessary. These steps should help isolate the issue and identify the proper resolution.

Verify that the mail server configuration set in vCenter Management Server Configuration is correct. For more information, see the Preparing for Email Message SMTP Alarm Notification section in the Basic System Administration guide.

Verify that network connectivity exists between the vCenter Server and the mail server that has been configured in vCenter Server. For more information, see Testing network connectivity with the ping command (1003486).

Verify that you can connect from the vCenter Server to the mail server on port 25. For more information, see Testing port connectivity with Telnet (1003487).

Verify that the mail server configuration allows email to be sent from vCenter Server. The ability to send mail may be restricted so that anonymous email is not allowed or that specific user accounts are required to send mail. If this is the case a rule must be created to allow the vCenter Server to send email, as there is currently no way to configure SMTP authentication with vCenter Server. In vCenter Server 6.0 entering information into the mail.smtp.username and mail.smtp.password fields does not enable authentication.

Verify that email is not being blocked by software such as antivirus or spyware. To test if email is being blocked, disable any such software and create a condition that generates another alert from vCenter Server. If the email is sent successfully, a rule must be created to allow traffic from vCenter Server. For more information on configuration of any third party service, contact the vendor of the product.

Note: If your problem still exists after trying the steps in this article, you must:

Gather the VMware Support Script Data. For more information, see Collecting diagnostic information in a VMware Virtual Infrastructure Environment (1003689).

File a support request with VMware Support and note this KB Article ID (1004070) in the problem description. For more information, see Filing a Support Request in Customer Connect (2006985).

Related Information

Testing network connectivity with the ping command
Testing port connectivity with Telnet
Collecting diagnostic information in a VMware Virtual Infrastructure Environment
How to file a Support Request in Customer Connect
Diagnosticar por qué vCenter Server no está enviando alertas de correo electrónico
VMware vCenter Server が電子メール アラートを送信しない理由を診断する
诊断 VMware vCenter Server 无法发送警示电子邮件的原因

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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