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With the fqdn "glpi.domain.dom", if a client has a domain search parameter that allows it to be resolved as simply "glpi" or by use of a cname as "support" or "support.domain.dom", glpi reports an error, "Error calling the previous page from forbidden one."
Perhaps there should be a configuration option that would allow this check to succeed on a set of allowed hostnames.
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As said on IRC, try "UseCanonicalName On"
Dév. Fedora 29 - PHP 5.6/7.0/7.1/7.2/7.3/7.4 - MariaDB 10.3 - GLPI master
Certifié ITILv3 - RPM pour Fedora, RHEL et CentOS sur https://blog.remirepo.net/
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