diff --git a/Sanity/default-map-type/main.fmf b/Sanity/default-map-type/main.fmf
new file mode 100644
index 0000000..4542eb3
--- /dev/null
+++ b/Sanity/default-map-type/main.fmf
@@ -0,0 +1,24 @@
+summary: Default map type
+description: 'Tests default map type'
+contact: František Hrdina <fhrdina@redhat.com>
+component:
+  - postfix
+test: ./test.sh
+framework: beakerlib
+recommend:
+  - postfix
+  - postfix-lmdb
+duration: 5m
+enabled: true
+tag:
+  - Tier1
+tier: '1'
+link:
+  - verifies: https://issues.redhat.com/browse/RHEL-50557
+adjust:
+  - enabled: false
+    when: distro < rhel-8
+    continue: false
+  - enabled: false
+    when: distro < centos-stream-8
+    continue: false
diff --git a/Sanity/default-map-type/test.sh b/Sanity/default-map-type/test.sh
new file mode 100755
index 0000000..43ff1d5
--- /dev/null
+++ b/Sanity/default-map-type/test.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+# vim: dict+=/usr/share/beakerlib/dictionary.vim cpt=.,w,b,u,t,i,k
+. /usr/share/beakerlib/beakerlib.sh || exit 1
+
+rlJournalStart
+    rlPhaseStartSetup
+        rlAssertRpm "postfix"
+        # postfix-lmdb presented on rhel9.3 and higher, but default only on rhel10/c10s and higher and fedora
+        (rlIsRHEL '>=9.3' || rlIsFedora || rlIsCentOS '>=9') && rlAssertRpm "postfix-lmdb"
+        rlFileBackup --clean /etc/postfix
+        rlRun "tmp=\$(mktemp -d)" 0 "Create tmp directory"
+        rlRun "pushd $tmp"
+    rlPhaseEnd
+
+    rlPhaseStartTest
+        rlRun "echo \"test_key test_value\" > /etc/postfix/test" 0 "Creating config"
+        rlRun "postmap /etc/postfix/test &> postmap.log" 0 "Running postmap"
+        
+        if rlIsRHELLike '<10' || rlIsFedora; then
+            rlAssertExists "/etc/postfix/test.db"
+        else
+            rlAssertExists "/etc/postfix/test.lmdb"
+        fi
+        rlAssertNotGrep "postmap: fatal: unsupported map type: hash" postmap.log
+    rlPhaseEnd
+
+    rlPhaseStartCleanup
+        rlFileRestore
+        rlRun "popd"
+        rlRun "rm -r $tmp" 0 "Remove tmp directory"
+    rlPhaseEnd
+rlJournalEnd