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<TITLE>Basic Postfix Configurations: Internet host and domain names</TITLE>
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<H2><A NAME="s3">3. Internet host and domain names</A></H2>
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<DT><B>Hostname</B><DD><P>The "Hostname" option specifies the "internet hostname" of this
mail system. The default is to use the fully-qualified domain name
from gethostname(). The "Hostname" option is used as a default value
for many other configuration parameters. This option sets the "myhostname"
postfix variable.
<P>
<DT><B>Domain</B><DD><P>The "Domain" option specifies the local internet domain name.
The default is to use the contents of "Hostname" minus the first
component. The "Domain" option is used as a default value for many
other configuration parameters. This option sets the "mydomain"
postfix variable.
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