Configuring sending email via SMTP for Microsoft Exchange Online

Intrexx offers you the option of sending automated emails. General information on this can be found in the Email service section.

Below you will find instructions on how to configure sending emails via Intrexx per SMTP for Microsoft Exchange Online.

Step-by-step guide

To configure sending emails via SMTP for Microsoft Exchange Online, proceed as follows:

  1. Start the "Tools" module.

  2. Select "E-mail service".

  3. Click on the Configure button.

    The "Default sender" dialog box is displayed.

    Name

    Enter the default sender here. The default sender is used if no individual sender has been defined in an application or process.

    Email

    Enter the email address of the default sender here.

  4. Click on "Next".

    The "E-mail server" dialog box is displayed.

    Fields

    Values

    SMTP server

    		 smtp.office365.com

    SMTP port

    		 587

    Connection security

    		 STARTTLS
    PLAIN true (activate checkbox)
    Login true (activate checkbox)
    CRAM-MD5 true (activate checkbox)
    NTLM true (activate checkbox)
    Username Enter the username here.
    Password Enter the password here.

  5. Click on "Next".

    The "Send settings.

    Detailed information on this dialog can be found in section Sending settings.

  6. Click on "Next".

    The "Connection test" dialog box appears.

  7. Click on Test.

    Possible error during connection test

    Please note that the option ""Authenticated SMTP"" must be enabled in the MS 365 Admin Center for the corresponding Microsoft Exchange mailbox or user.

    You can find detailed information on this at Microsoft under the following link:

    Enable or disable authenticated client SMTP submission (SMTP AUTH) in Exchange Online

    If the option "Authenticated SMTP" is not activated in the MS 365 Admin Center, the following error message will be displayed when performing the connection test from Intrexx:

    Error:

    javax.mail.AuthenticationFailedException: 535 5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information.

  8. Click on "Finish".

More information

Email service

Further information available from Microsoft

POP, IMAP, and SMTP settings for Outlook.com

Enable or disable authenticated client SMTP submission (SMTP AUTH) in Exchange Online