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Step 7: Configure Public DNS Host for Mail Flow

May 30, 2018 | by iaur | posted as Configuration(2016), Exchange Onprem

Access the Control Panel of your DNS host provider

After you’ve configured the external URL on the Mailbox server virtual directories, you need to configure your public DNS records for Autodiscover, Outlook Web App, and mail flow. The public DNS records should point to the external IP address or FQDN of your Internet-facing Mailbox server and use the externally accessible FQDNs that you’ve configured on your Mailbox server. The following are examples of recommended DNS records that you should create to enable mail flow and external client connectivity.

FQDNDNS record typeValue
Contoso.comMXMail.contoso.com
Mail.contoso.comA172.16.10.11
Owa.contoso.comCNAMEMail.contoso.com
Autodiscover.contoso.comCNAMEMail.contoso.com

Example:

Last updated 5/30/18 7:39 AM Type CNAME CNAME MX Name mail autodiscover _ domainconnect Value 104215.146231 104215.146231 104215.146231 _domainconnect_gd_domaincontrol.com mail_faceresionem_xyz (Priority: 0) 600 seconds 1 Hour 1 Hour 1 Hour 1 Hour 1 Hour

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