CSSCurrent en:Microsoft Exchange Online on Cryptshare Appliances

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Introduction

The Cryptshare Appliance sends notification emails when updates to the underlying OpenSuse components are available. For this, a local postfix is installed that is usually configured by the Cryptshare Server. However, this is only automatically done, when a regular SMTP server is used as a target for the local postfix. In case, Microsoft Exchange Online is used together with OAuth 2.0 authentication, then the configuration of postfix has to be done manually.

Set-up

Installing Postfix

apt install Postfix

echo "your-company.com" > /etc/mailname

add-apt-repository ppa:sasl-xoauth2/stable

apt install sasl-xoauth2

Configuring Postfix

TBD

(Optional) Automate Certificate Copy with systemd

TBD

Generate an OAuth Token

TBD

Test and Debug

Test the Email Relay with sendmail

Your relay should now be operational. To test the setup from the relay host, you can use the sendmail command directly from the terminal.

  • Create a test message file:

From: <sender-mail>To: <recipient-mail>Subject: Test message

Does it work?

  • Send the email using sendmail: root@host:~# cat /tmp/test.txt | sendmail -F <sender-mail> <recipient-mail>
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