How to configure multi-instance in Postfix ?

Solution Verified - Updated -

Issue

  • How to configure multi-instance in Postfix ?
  • multi-instance in Postfix does not work with SELINUX=enforcing Mode.
  • Selinux related Permission Denied issue can be seen in logs.
postfix-neto/postfix-script: starting the Postfix mail system
postfix-neto/master: fatal: fifo_listen: remove public/pickup: Permission denied

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Postfix
  • Selinux

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