Restrict Ticket Creation on Valid Users

  • Used Zammad version: 2.4
  • Used Zammad installation source: (source, package, …): RPM
  • Operating system: CentOS7

Expected behavior:

  • If a user is not in zammad defined, or a user is not in this organization, creation of tickets via e-Mail should be rejected/prevented.

Actual behavior:

  • If any user sends an e-Mail to a (guessed) Mail-Address which is defined in Email-Accounts, then a new ticket is created (or a existing ticket is updated/reopened).

Steps to reproduce the behavior:

  • Just send an e-Mail from any User (e.g. ext.spam@domain.com) to any of the e-Mail accounts.
  • Then a new ticket is created

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