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Description of problem:

The relayhost parameter of postfix is defined as relay_host in the doc /usr/share/doc/rhel-system-roles/postfix/README.md.

~~~~~~~~~
Sample from the doc

Install and enable postfix. Do single backup of main.cf (older backup will be
rewritten) and configure "relay_host=example.com":

```yaml
---
- hosts: all
  vars:
    postfix_conf:
      relay_host: "example.com" <<<-------------
    postfix_backup: true
  roles:
    - linux-system-roles.postfix
```

~~~~~~~~~~

Version-Release number of selected component (if applicable):

rhel-system-roles-1.0-10.el8_1.noarch


Expected results:

The parameter should be relayhost and not relay_host.


Additional info:

The doc is provided by rhel-system-roles

# rpm -qf /usr/share/doc/rhel-system-roles/postfix/README.md
rhel-system-roles-1.0-10.el8_1.noarch

Thank you for the report, the change did not make it into 8.4, but we are considering it for a future release.

merged upstream

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (rhel-system-roles bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:4159