Dear all My first post on this community and no previous experience on mail systems, so I beg for some indulgence. Do you know if it is possible to remove x-headers added by Kaspersky Security for Microsoft Exchange? Or at least change the values of the x-headers. I’m interested in doing so to the messages sent out of the organization. X-headers expose too much information to the outside world, starting from the used antivirus/antispam product used. I have used Exchange rules to delete x-headers or change the value. It works sometimes, others do not: - Removing x-kse-antivirus-attachment-filter-interceptor-info or x-originating-ip works OK. - Changing the value of X-KSE-ServerInfo does not work. But creating a rule for each x-header will be a bit of overheating the mail server. So I would prefer to manage the issue within Kaspersky, if possible. I have searched for information on the subject with no results. Am I asking for something stupid maybe? Thank-you very much