Question: My organization has 2 mail servers. One is our MS Exchange server for corporate mail. The other is an SMTP server (not Exchange) our application uses to send automated email notifications to our users. Both servers send from `@example.com`, though each server has a separate public IP.

I'm wondering if there is a downside to implementing DKIM only for our automated email server (as it seems Exchange doesn't support DKIM out of the box). It's not clear if a partial implementation would hurt mail sent without DKIM.

Answer: 
Please double check the radio button on the assignment tab. Even though you set a time in the scheduled section, if the selected radio button is `as soon as possible`, then it will install right away, which sounds like your issue.

![enter image description here](https://i.stack.imgur.com/dtK2X.jpg)
Mandatory just means that if it hasn't ran already on the machine since it's been advertised, it MUST run on (or after) that mandatory assignment. It's kinda misleading as you'd think it would mean it would wait to start the install until that time, but that's not quite it.