Check your SMTP Server Settings for Email Notifications
To set the SMTP server, complete the following steps:
Step 1 From the Cisco ISE Administrator interface, choose Administration > System > Settings > SMTP Server. The SMTP Server Settings page appears.
Step 2 In the SMTP Server field, type the host name of the outbound SMTP server to which you need to deliver email. For the email notification to function appropriately, the SMTP host server must be accessible from the Cisco ISE server. The maximum length for this field is 60 characters.
Step 3 Choose the Enable Notifications option to enable mail functionality globally.
Step 4 Choose Use email address from Sponsor, to send guest notification email from the email address of the sponsor.
Step 5 If you want to specify a different email address, choose Use Default email address and type the email address from which you want guest notification emails to be sent (for example, username@domain.com).
Step 6 Click Save.
