Modify SMTP Server Details

Before you begin

  • For Office 365, have the MX FQDN Record ready.
  • For SMTP Relay other than Office 365, have the SMTP server IP address or domain name ready.
  • If you are configuring a custom SMTP server certificate, ensure that you have the certificate in .crt file format.


Step 1: Log in to the BE4000 portal.

Step 2: Click Manage Site from Actions menu for the desired site on the dashboard.

Step 3: Click Settings > System Settings.

Step 4: Enter the SMTP server details under “SMTP Server – Enables Voicemail to Email Functionality” section.

In the “IP Address or Domain Name” field, enter one of the following

NOTE: You can configure Fully Qualified Domain Name (FQDN) of public SMTP servers only. BE4000 handles all Domain Name System (DNS) resolutions through the internet and thus only public FQDNs are accepted. For example,,

  • If the customer has Office 365, enter the MX FQDN record that is copied from Office 365 portal.
  • If the customer has SMTP relay other than Office 365, enter the SMTP server IP Address or Domain Name.

In the “Port” field, enter one of the following:

  • If the “Security Mode” is “None, enter 25.
  • If the “Security Mode” is “SSL”, enter 465
  • If the “Security Mode” is “STARTTLS”, enter 587

From the “Security Mode” drop-down list, enter one of the following:

  • If the customer has Office 365, choose None. “SSL” and “STARTTLS” are not supported for Office 365.
  • If the customer has SMTP relay that is trusted by the BE4000, choose SSL or STARTTLS as per customer’s network.

In the “Sender’s Email Address”, enter the email address that is used as “From” address while sending the emails containing the voicemail attachments.

Click Choose File in the “Upload SMTP Server Certificate” section to upload the certificate.


  • The “Upload SMTP Server Certificate” section is visible only when you choose “SSL” or “STARTTLS” from the Security drop-down list.
  • BE4000 accepts SMTP server certificates only in .crt file format.

(Optional) Check the Authenticate check box and enter the username and password. The authenticate username and password are the credentials required by the voicemail application to authenticate itself with the SMTP relay server before sending the voicemail file.

(Optional) Click Validate SMTP. Enter the email address to receive the test email containing the voicemail.


  • Before validating the SMTP server address, the portal saves the changes made to the SMTP server settings and the previously configured settings cannot be restored.
  • The portal only checks if the SMTP server address is valid and does not check the validity of the email address entered. You see success message displayed on the portal based on the voicemail application’s ability to authenticate and send email using the SMTP Relay. If the email address entered is invalid, you may not receive the email. Hence, you may see the success message on the portal even when you have not received the email.

Step 5: Click Save.