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mail:best-practices-guide [2010-12-21 12:27:57]
garrett.plasky Approved
mail:best-practices-guide [2015-09-09 10:35:39] (current)
rory.blanchard [rDNS]
Line 15: Line 15:
 Proper Reverse DNS or rDNS records are essential to mail deliverability. If one standard has been agreed upon the most by the industry, it is the existence of matching forward and reverse DNS records. In a default setup, mail will flow out of your server via the base IP (usually eth0 or "​Default Adapter"​). This IP should have a forward DNS record (A record) associated with it that gives it a name. An example is below for a host named //​test.example.com//​ (test for short): Proper Reverse DNS or rDNS records are essential to mail deliverability. If one standard has been agreed upon the most by the industry, it is the existence of matching forward and reverse DNS records. In a default setup, mail will flow out of your server via the base IP (usually eth0 or "​Default Adapter"​). This IP should have a forward DNS record (A record) associated with it that gives it a name. An example is below for a host named //​test.example.com//​ (test for short):
  
-<sxh plain>​test.example.com. ​             IN      A             ​1.2.3.4</​sxh>+<code>​test.example.com. ​             IN      A             ​1.2.3.4</​code>
  
 This is your forward record that resolves a name to an IP. You also want a reverse record that maps your IP back to your hostname. This looks like: This is your forward record that resolves a name to an IP. You also want a reverse record that maps your IP back to your hostname. This looks like:
  
-<sxh plain>​4.3.2.1.in-addr.arpa. ​         IN      PTR           ​test.example.com.</​sxh>+<code>​4.3.2.1.in-addr.arpa. ​         IN      PTR           ​test.example.com.</​code>
  
 To set this up using our VPS service, log into your [[https://​manager.provps.com|VPS Manager]] and go to Configuration -> Reverse DNS. For a dedicated server, please email support@ndchost.com. To set this up using our VPS service, log into your [[https://​manager.provps.com|VPS Manager]] and go to Configuration -> Reverse DNS. For a dedicated server, please email support@ndchost.com.