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Make sure your system has a fully qualified hostname. If properly configured during the installation process, the following lines should be in your /etc/hosts file:
{{Box File|/etc/hosts|
127.0.0.1 localhost.localdomain localhost
<your sipX server IP addr> sipx.your.domain sipx
}}
Test hostname:
{{Box Code|test host and domain name settings|
hostname (outputs your fully qualified name)
domainname -f (outputs the fully qualified name)
domainname -d (outputs the domain name)
}}
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