6. a b c d

7. Connector Type Mailflow Direction Inbound connector: mails enter O365Outbound connector : mails leave O365 OnPremises Configure and enforce mailflow originating from on-premises servers Configure and enforce outbound routing for mails leaving O365 service to on-premises servers. Smart host must be used for outbound connector of type OnPremises. PartnerConfigure and enforce mailflow incoming from partner servers (for e.g. partnerbank.com), or from a 3 rd party service vendor (for e.g. MessageLabs.com). Configure and enforce outbound routing for mails leaving O365 service to a partner (for e.g. partnerbank.com), or to a 3 rd party service vendor (for e.g. MessageLabs.com). Use MX based routing or smart host in the connector. 7

8. 8 Tenant’s mail Not tenant’s mail emailstore Spam/virus

10. 4 1 3 2

11. 3.1 2.2 2.1 1.2 4.2 1.1 4.1 3.2

12. 3.1 2.2 2.1 1.2 4.2 1.1 4.1 3.2 10 9 6 5 7.1 8 7.2 11 12

13. 4.2 4.3 2.1 1.2 2.3 3.1 3.2 10.1 9 6 10.2 5 7 8 2.2 1.1 4.1

14. 9.2 11.2 1.2 3.1 8.3 9.3 6 5 7.1 7.2 4.1 8.2 1.1 2.1 10.1 2.2 4.2 8.1 9.1 10.2 10.3 11.3 11.1 3.2

15. 3.1 4.1 9 11.2 5 7.1 11.1 7.2 1.2 9.1 4.3 4.2 2.3 3.2 2.1 2.2 6 1.1 8 10.1 10.2

23. 3.1 4.1 9 11.2 5 7.1 11.1 7.2 1.2 9.1 4.3 4.2 2.3 3.2 2.1 2.2 6 1.1 8 10.1 10.2

37. 2 4.2 4.1 1 3.1 3.2