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