Question:How To Configure SMTP Settings On vSphere 5

If you want your ESXi Servers to send you alerts and reports via email you can configure your host to use your local or remote SMTP server.

To Configure vCenter SMTP settings:

Open Vsphere Client and to Administration -> vCenter Settings.

Go to Mail and type your SMTP server IP or hostname and the address your will send email from.

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Remember to add the vCenter IP address to your Exchange server relay list or your other mail system.