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Blue Tongue
Asked: 2019-07-27 05:05:11 +0800 CST

TXT records and Exchange 2010 Federation

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I am confused as to how many TXT records I require for Exchange 2010 Federation.

If my organisation uses @abc.com as the primary SMTP address and @xyz.com as an alias, do I create the following TXT records using individual proof values?

1) exchangedelegation.abc.com

2) abc.com

3) xyz.com

Do I need the exchangedelegation.abc.com TXT record at all? The newer Microsoft documentation does not seem to mention this.

Any thoughts?

exchange-2010

2 Answers

  1. If @xyz.com is only for additional email address, you didn’t need TXT record for @xyz.com. The domain you select will be used to configure the OrgID for the federation trust.

    federated domain: An accepted authoritative domain that's added to the organization identifier (OrgID) for an Exchange organization.

    Make a note of the federated domain proof that's generated for the primary shared domain. You'll use this string to create a TXT record on your public DNS server.

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  2. Best Answer

    I can confirm that for Microsoft Federation Gateway, subdomain exchangedelegation.abc.com is only required for Exchange 2010 SP1. SP3 does not need this subdomain.

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