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Configuring sendmail
Configuring sendmail involves these tasks:
- Customize the sendmail.cf file.
- Modify the aliases file.
- Start the sendmail daemon.
This section provides an example for configuring a fictitious sendmail environment. The fictitious environment includes:
- a stand-alone station where users can send mail locally (solitaire)
- a simple isolated sendmail network with one domain (lab.fictitious.com)
- a hierarchical sendmail network with relays and one domain (eng.fictitious.com)
- a hierarchical sendmail network with relays and multiple domains (corp.fictitious.com and fin.fictitious.com)
- a complex hierarchical sendmail network with forwarders, relays, and multiple domains (corp.fictitious.com and eng.fictitious.com)
- a UUCP sendmail connection (uk.com)
Note: In the following examples, an empty macro or class has no values assigned to it. The macro or class is left blank.
Figure 8-3 illustrates the fictitious sendmail environment to be used for configuring sendmail.
![](IAX5FNetwkMail-200-image-12.gif)
Figure 8-3 : sendmail Configuration Environment (Fictitious)
- Customizing the sendmail.cf File
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- Modifying the Aliases Database
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- Starting the sendmail Daemon
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