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NetTen Overview


NetTen provides two key intranet and internet services on Power Macs: mail service and domain name service. The mail and the DNS (Domain Name Service) servers are designed to take advantage of Tenon's special Macintosh fast file system and Tenon's unique execution environment. With NetTen, your Power Mac can support an unlimited number of mail accounts and host any number of virtual domains.



NetTen's mail server, Post.Office, is based on the highly acclaimed mail server from Software.com. Post.Office implements SMTP (Simple Mail Transfer Protocol) and ESMTP (Extended Simple Mail Transfer Protocol), supporting multiple domains on a single host and automatic reply and integrated 'finger', IMAP4 and POP3 mail services. Configuration and management uses simple web-based administration. Using the web interface, the administrator can manage the Post.Office system while users can use a subset of these administration features to manage their own mail accounts. This convenient remote configuration and administration capability is kept secure by limiting access to specific domains and by controlling access by passwords.


A web browser is all that is needed to configure and administer the Post.Office system. NetTen includes its own web server for point-and-click administration. The web-based administration covers everything from setting up e-mail accounts to defining the log format. Powerful SMTP filters can be set-up to guard against SPAM e-mail.


The Post.Office system is multihoming capable. Simply by setting your NetTen server as the mail host for multiple domains, you can send and receive mail for all of those domains. For example, one mailbox in NetTen can receive mail from the addresses: joe@primarydomain.com, joe@otherdomain.com and even joe@secondarydomain.com.



POP3 and IMAP4 Mail

POP3 and IMAP4 are protocols used to access mail received by NetTen but not yet distributed to end users. Typically POP is used by mail readers, like Eudora, to automatically poll a NetTen mail account for previously received mail. POP extracts any received mail, a complete message at a time, and optionally deletes the message from NetTen storage. IMAP is a more modern protocol that performs the same basic functions. It has the notable feature that mail messages are read a segment at a time rather than a complete message-at-a-time, bypassing the need to fully copy a mail message to a local mail client before viewing the content. Thus, with IMAP, mail is left on the mail server machine. This gives a user the flexibility to access their mail from different client machines.


NetTen's full-featured Domain Name Server supports multiple primary and secondary domains simultaneously. With NetTen you can set up an unlimited number of domains. And, NetTen supports full recursive name service - no parent DNS server is required. Since Internet `root' servers are pre-configured, you simply install NetTen, use the internet address of the NetTen machine as the `domain name server address' on your other machines, and your NetTen Mac becomes a Domain Name Server.


NetTen's DNS supports "round robin" load balancing, so you can divide your mail or web server load across multiple machines. A local cache speeds up repeat lookup requests. A `subdomain' feature lets you subdivide domains for easier administration of large domains. A zone transfer capability lets you transfer primary and secondary domains to other secondary servers. Using the web browser interface, you can configure your domain name server remotely from anywhere in the world - no special remote administration tools are needed at the remote site and no special administration agent is required on the DNS server.


The DNS administration web browser interface accepts abbreviations and lets you sort your lists alphabetically, numerically, or by precedence. Built-in error checking catches redundant entries, incomplete entries, or missing dots on fully qualified names. Updates are immediately available to other systems. There is no one or two minute wait for changes to be made available to the network. And, because you are using the web, you have automatic `hot links' to related records. For example, a hostname is hot linked to its Mail Exchangers, to other members of its load balancing group, and to all aliases to itself. And, of course, all documentation is available online via the web.


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