Книга: Windows Server 2012 R2 Storage, Security, & Networking Pocket Consultant
Adding mail exchange servers
Adding mail exchange servers
MX records identify mail exchange servers for the domain. These servers are responsible for processing or forwarding email within the domain. When you create an MX record, you must specify a preference number for the mail server. A preference number is a value from 0 to 65,535 that denotes the mail server’s priority within the domain. The mail server with the lowest preference number has the highest priority and is the first to receive mail. If mail delivery fails, the mail server with the next lowest preference number is tried.
You create an MX record by following these steps:
1. In the DNS Manager console, expand the Forward Lookup Zones folder for the server with which you want to work.
2. Press and hold or right-click the domain you want to update, and then tap or click New Mail Exchanger (MX).
3. You can now create a record for the mail server by filling in these text boxes:
? Host Or Child Domain Using a single-part name, enter the name of the subdomain for which the server specified in this record is responsible. In most cases, you will leave this box blank, which specifies that there is no subdomain and the server is responsible for the domain in which this record is created.
? Fully Qualified Domain Name (FQDN) Enter the FQDN of the domain to which this mail exchange record should apply, such as cpandl.com .
? Fully Qualified Domain Name (FQDN) Of Mail Server Enter the FQDN of the mail server that should handle mail receipt and delivery, such as corpmail.cpandl.com. Email for the previously specified domain is routed to this mail server for delivery.
? Mail Server Priority Enter a preference number for the host from 0 to 65,535.
NOTE Assign preference numbers that leave room for growth. For example, use 10 for your highest priority mail server, 20 for the next, and 30 for the one after that.
REAL WORLD You can’t enter a multipart name in the host Or Child Domain text box. If you need to enter a multipart name, you are creating the MX record at the wrong level of the DNS hierarchy. Create or access the additional domain level, and then add an MX record at this level for the subdomain.
4. Tap or click OK.
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