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2f8ad142ec
`stderr` is filtered by `grep` to discard unwanted (expected) log noise when appending the override `postfix-main.cf` content (_updated settings did not replace earlier defined instances_). That `grep` filter introduced a regression into DMS v14 release, since any other `stderr` content not being excluded was now blended into `stdout` and redirected with the original `stdout` output for the `postconf -n` command. The fix is to ensure the `grep` output is redirect to `stderr` to avoid that mishap.