1. Navigate to https://admin.exchange.microsoft.com/#/homepage
Delete the CrosswareTransportRule
2. Expand the Mail flow option
3. Click Rules
4. Select the "CrosswareTransportRule"
5. Click Delete
6. Click Confirm
Delete the connectors
7. Click Connectors
8. Select the "CrosswareInboundConnector"
9. Click Delete
10. Confirm the deletion
11. Select the "CrosswareOutboundConnector"
12. Click Delete
13. Confirm the deletion
Delete the groups
15. Click Teams & groups drop-down option
16. Click Active teams & groups
17. Click Distribution list tab
18. Select the "CrosswareMailSignatureUsers" group
19. Click Delete group
20. Confirm the deletion
21. Click the Security groups tab
22. Select the "CrosswareMailSignatureAdmins" group
23. Click Delete group
24. Confirm the deletion
Permanently disabling the Dynamic Signatures add-in
25. Click Integrated apps
26. Click Dynamic Signatures
27. Click Remove app
28. Tick the box 'Yes, I'm sure I want to remove the app and associated data."
29. Click Remove
