Configuring SMTP Server

To ensure correct delivery of emails to the user accounts configured in your setup, you must configure the server settings in Aruba Central (on-premises).Starting from Aruba Central (on-premises) 2.5.3.0, unencrypted email server communication is supported. A new option, No encryption is supported for SMTPSimple Mail Transfer Protocol. SMTP is an Internet standard protocol for electronic mail transmission.. When you configure SMTP, you can choose TLSTransport Layer Security. TLS is a cryptographic protocol that provides communication security over the Internet. TLS encrypts the segments of network connections above the Transport Layer by using asymmetric cryptography for key exchange, symmetric encryption for privacy, and message authentication codes for message integrity. , SSLSecure Sockets Layer. SSL is a computer networking protocol for securing connections between network application clients and servers over the Internet., or No encryption.

To configure an SMTP email server:

1. Go to the Account Home page.

2. Under Global Settings. The System Management.
3. Click the External Services tab.

4. In the SMTP pane, hover over the SMTP server name and click the icon.

The Edit SMTP Server section is displayed

5. Configure the following parameters:
   • Host name or IP address—Host name or IP Address of the SMTP server.
   • Port—Port number of the SMTP server. You can use port number that is configured on the SMTP server.
   • User Name—Email address of the user.
   • Password—Password. Retype the password to confirm.

   The user name and password fields are optional. If the SMTP server is already configured with a username and password, you can use the same. Else, you can leave the two fields without any value. The SMTP configuration is successful even without the username and password.

   • Encryption—You can select SSL, TLS, or No encryption for this field based on your SMTP Server configuration.
   • Test Email—Optionally, add a recipient’s email address to test if the SMTP server is configured with the correct parameters. Once you click on the Test Email, you will receive a test email which confirms your SMTP configuration was successful.

Recommended Configuration

If you have deployed Aruba Central (on-premises) in the online mode, Aruba recommends that you use any three of the following three SMTP sever configuration settings:

Table 1: SMTP Configuration Settings for Online Deployment Mode

SMTP Server	SMTP Port	Use TLS	SMTP User Name	SMTP Password
smtp.sendgrid.com	587	On	<default_username>	<default_password>
<Your mail relay host>	25	Off	<User name of the account created in your SMTP server>	<Password of the user account created in your SMTP server>
smtp.office365.com	587	On	<Your Microsoft Outlook email address>	<Password of your Microsoft Outlook account>
smtp.mail.yahoo.com	587	On	<Your Yahoo email address>	<Password of your Yahoo account>
smtp.gmail.com	587	On	<Your Gmail address>	<Password of your Gmail account>
NOTE:   If you are using your Yahoo email account, go to Account Info> Account Security and select Allow apps that use less secure sign in.  If you are using your Gmail account, go to your account settings, click Sign In and Security > Apps with Account Access, and set Allow less secure apps to ON.

If you have deployed Aruba Central (on-premises) in the offline mode, Aruba recommends that you use the following SMTP server configuration settings:

Table 2: SMTP Configuration Settings for Offline Deployment Mode

SMTP Server	SMTP Port	Use TLS	SMTP User Name	SMTP Password
<Your mail relay host>	25	Off	<User name of the account created in your SMTP server>	<Password of the user account created in your SMTP server>