Lyris User's Guide
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DNS Server
Table of Contents
Lyris Email Commands
Web Interface for Users
Server Administrator
Overview of Server Administrator
Server Admin Menu
Sites Menu
Server Config
Activation code and admin contact
TCP/IP Settings
DNS Server
Multiple TCP/IP addresses
Lyris URL
Mail Receiving Settings
Mail Delivery Settings
Lyris Command Protocol (LCP) Settings
Programming Extensions at the Server Level
Miscellaneous Server Config Settings
Server Documents
Server Action Phrases
Server People
Incoming Mail
Outgoing Mail
Server Admin Log
Shutdown Server
Site Administrator
List Administrator
Other Topics
Add-On Packages
Installing and Upgrading
Frequently Asked Questions

DNS Server

(required) The TCP/IP address of your domain name server.

Lyris will have to be shutdown and restarted in order for a change to this setting to take effect.

Note that if your DNS server is not working, or you give an invalid DNS TCP/IP address in this setting, that Lyris will no longer be able to send email out. In most cases, the Lyris installer will have placed an appropriate value here.

Lyris will verify any setting you enter by connecting to the IP address you specify, on port 53. If Lyris cannot verify that the DNS server setting is valid, it will not save the setting you specify, and you will receive a warning message to this effect.

You can specify as many DNS servers as you like. Each TCP/IP address must be on a separate line. If you specify more than one DNS server, Lyris will automatically balance the DNS query load between them. Also, if one of your servers goes down, Lyris will still be able to send mail if you have multiple DNS servers defined. Note that because Lyris uses an internal DNS caching scheme, the Lyris DNS cache is equally as effective with one or many servers -- thus, the usual reason for using just one DNS server (to help that server cache entries) does not apply with Lyris.

We recommend that busy sites define as many DNS servers as possible. DNS operations typically are typically a large part of the work in delivering mail, and when there is a great deal of mail to deliver, DNS server efficiency tends to suffer. Thus, listing many DNS servers will greatly increase your mail sending capacity.

Other pages which link to this page:
  • TCP/IP Settings
  • Setting Server Options
  • New in Version 2.0
  • Page 111 of 556