campaign image not populating in emails sent to employees

Summary:

Content (please ensure you mask any confidential information):

We have campaigns which gets rolled out to all the internal employees and none of them are able to view the image

Please find attached mails for reference where image is not loading in the communication.

Version (include the version you are using, if applicable):

23d

Code Snippet (add any code snippets that support your topic, if applicable):