diff --git a/lib/ftp.c b/lib/ftp.c
index 0473a8af00..98773ebf21 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -2131,9 +2131,11 @@ static CURLcode ftp_state_mdtm_resp(struct Curl_easy *data,
   default:
     infof(data, "unsupported MDTM reply format");
     break;
-  case 550: /* "No such file or directory" */
-    failf(data, "Given file does not exist");
-    result = CURLE_REMOTE_FILE_NOT_FOUND;
+  case 550: /* 550 is used for several different problems, e.g.
+               "No such file or directory" or "Permission denied".
+               It does not mean that the file does not exist at all. */
+    infof(data, "MDTM failed: file does not exist or permission problem,"
+          " continuing");
     break;
   }
 
diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc
index 818ee08524..f6788ce0a6 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -245,4 +245,4 @@ test2200 test2201 test2202 test2203 test2204 test2205 \
 test3000 test3001 test3002 test3003 test3004 test3005 test3006 test3007 \
 test3008 test3009 test3010 test3011 test3012 test3013 test3014 test3015 \
 test3016 test3017 test3018 test3019 test3020 test3021 test3022 test3023 \
-test3024 test3025 test3026
+test3024 test3025 test3026 test3027
diff --git a/tests/data/test3027 b/tests/data/test3027
new file mode 100644
index 0000000000..6d7aeb620b
--- /dev/null
+++ b/tests/data/test3027
@@ -0,0 +1,55 @@
+<testcase>
+<info>
+<keywords>
+FTP
+CURLOPT_FILETIME
+MDTM fail
+</keywords>
+</info>
+
+# Server-side
+<reply>
+<servercmd>
+REPLY MDTM 550 Permission denied
+</servercmd>
+<data>
+data blobb
+</data>
+
+# data is sent to stdout
+</reply>
+
+# Client-side
+<client>
+<server>
+ftp
+</server>
+ <name>
+Get a file via FTP but 550 after MDTM command
+ </name>
+<tool>
+lib3027
+</tool>
+<command option="no-include">
+ftp://%HOSTIP:%FTPPORT/%TESTNUMBER
+</command>
+<stdout>
+data blobb
+</stdout>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+USER anonymous
+PASS ftp@example.com
+PWD
+MDTM %TESTNUMBER
+EPSV
+TYPE I
+SIZE %TESTNUMBER
+RETR %TESTNUMBER
+QUIT
+</protocol>
+</verify>
+</testcase>
diff --git a/tests/data/test511 b/tests/data/test511
index 994907a9b0..6bcf25de59 100644
--- a/tests/data/test511
+++ b/tests/data/test511
@@ -44,6 +44,8 @@ USER anonymous
 PASS ftp@example.com
 PWD
 MDTM %TESTNUMBER
+TYPE I
+SIZE %TESTNUMBER
 QUIT
 </protocol>
 </verify>
diff --git a/tests/libtest/Makefile.inc b/tests/libtest/Makefile.inc
index ed7001134c..b7ce8b6e33 100644
--- a/tests/libtest/Makefile.inc
+++ b/tests/libtest/Makefile.inc
@@ -65,7 +65,7 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect                \
          lib1915 lib1916 lib1917 lib1918 lib1919 \
  lib1933 lib1934 lib1935 lib1936 lib1937 lib1938 lib1939 lib1940 \
  lib1945 lib1946 \
- lib3010 lib3025 lib3026
+ lib3010 lib3025 lib3026 lib3027
 
 chkdecimalpoint_SOURCES = chkdecimalpoint.c ../../lib/mprintf.c \
  ../../lib/dynbuf.c ../../lib/strdup.c
@@ -759,3 +759,7 @@ lib3025_CPPFLAGS = $(AM_CPPFLAGS)
 lib3026_SOURCES = lib3026.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib3026_LDADD = $(TESTUTIL_LIBS)
 lib3026_CPPFLAGS = $(AM_CPPFLAGS)
+
+lib3027_SOURCES = lib3027.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
+lib3027_LDADD = $(TESTUTIL_LIBS)
+lib3027_CPPFLAGS = $(AM_CPPFLAGS)
diff --git a/tests/libtest/lib3027.c b/tests/libtest/lib3027.c
new file mode 100644
index 0000000000..2b1d8dc44f
--- /dev/null
+++ b/tests/libtest/lib3027.c
@@ -0,0 +1,56 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2020 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+#include "test.h"
+
+#include "testutil.h"
+#include "warnless.h"
+#include "memdebug.h"
+
+int test(char *URL)
+{
+  CURLcode ret = CURLE_OK;
+  CURL *hnd;
+  start_test_timing();
+
+  curl_global_init(CURL_GLOBAL_ALL);
+
+  hnd = curl_easy_init();
+  if(hnd) {
+    curl_easy_setopt(hnd, CURLOPT_URL, URL);
+    curl_easy_setopt(hnd, CURLOPT_FILETIME, 1L);
+    ret = curl_easy_perform(hnd);
+    if(CURLE_OK == ret) {
+      long filetime;
+      ret = curl_easy_getinfo(hnd, CURLINFO_FILETIME, &filetime);
+      /* MTDM fails with 550, so filetime should be -1 */
+      if((CURLE_OK == ret) && (filetime != -1)) {
+        /* we just need to return something which is not CURLE_OK */
+        ret = CURLE_UNSUPPORTED_PROTOCOL;
+      }
+    }
+    curl_easy_cleanup(hnd);
+  }
+  curl_global_cleanup();
+  return (int)ret;
+}