Your comments

Hi,

Thank you for your suggestion.

This is already possible, you can set strict domain/email/headers/etc... acceptance rules in "Administration > Rules > Rules for assigning a ticket created through a mails receiver".

Regards,

Plugin are not handled by GLPI core team, please contact plugin author

Work almost done: https://github.com/glpi-project/glpi/pull/6183

Will be shipped in 9.5 version

Will be part of GLPI 9.5.0

Original PR has neve been finished. See https://github.com/glpi-project/glpi/pull/6158 instead.