The custom relay uses a send connector to forward outgoing messages to the Zivver SMTP Server, so you must create a send connector in Microsoft Exchange on-premises.

Microsoft Exchange routes each outbound message through only one send connector. Review the existing send connectors in Exchange on-premises before you begin. If another specific send connector must also handle Zivver messages, a custom relay might not be feasible. Describe such use-cases to enterprise@zivver.com.

Prerequisites

Before you create the send connector, make sure you have created an accepted domain and a contact.

Procedure

1. Open the Exchange Administration Center (EAC).
2. Sign in as an administrator.
3. In the left-hand menu, select Mail flow.
4. Select Send connectors.
5. Click add to add a new connector.
6. Name the connector Zivver Send Connector.
7. For Type, choose Custom.
8. Click Next.
9. Select Route mail through these smart hosts.
10. Click add.
11. Enter smtp.zivver.com.
12. Click Save.
    The smart host now appears in the list.
13. Click Next.
14. For Smart host authentication, choose Basic authentication.
15. Enable Offer basic authentication only after starting TLS.
16. In Zivver Organization Settings, generate Mail Submission SMTP credentials.
17. Enter the generated SMTP username in User name.
18. Enter the generated SMTP password in Password.
19. Click Next.
20. Click add.
21. For Type, enter SMTP.
22. For FQDN, enter the placeholder domain zivver.org.
23. For Cost, enter 1.
24. Click Save.
25. Enable Scoped send connector.
26. Click Next.
27. Click add.
28. Select a server and click Add ->.
29. Click OK.
30. Click Finish.

The send connector now processes all messages addressed to the placeholder domain.