diff --git a/core/src/main/java/google/registry/reporting/icann/IcannHttpReporter.java b/core/src/main/java/google/registry/reporting/icann/IcannHttpReporter.java
index 5410bbf5d..d31661176 100644
--- a/core/src/main/java/google/registry/reporting/icann/IcannHttpReporter.java
+++ b/core/src/main/java/google/registry/reporting/icann/IcannHttpReporter.java
@@ -24,6 +24,8 @@ import com.google.api.client.http.GenericUrl;
 import com.google.api.client.http.HttpHeaders;
 import com.google.api.client.http.HttpRequest;
 import com.google.api.client.http.HttpResponse;
+import com.google.api.client.http.HttpResponseException;
+import com.google.api.client.http.HttpStatusCodes;
 import com.google.api.client.http.HttpTransport;
 import com.google.common.base.Ascii;
 import com.google.common.base.Splitter;
@@ -80,6 +82,7 @@ public class IcannHttpReporter {
     headers.setContentType(CSV_UTF_8.toString());
     request.setHeaders(headers);
     request.setFollowRedirects(false);
+    request.setThrowExceptionOnExecuteError(false);
 
     HttpResponse response = null;
     logger.atInfo().log(
@@ -87,6 +90,12 @@ public class IcannHttpReporter {
     boolean success = true;
     try {
       response = request.execute();
+      // Only responses with a 200 or 400 status have a body. For everything else, throw so that
+      // the caller catches it and prints the stack trace.
+      if (response.getStatusCode() != HttpStatusCodes.STATUS_CODE_OK
+          && response.getStatusCode() != HttpStatusCodes.STATUS_CODE_BAD_REQUEST) {
+        throw new HttpResponseException(response);
+      }
       byte[] content;
       try {
         content = ByteStreams.toByteArray(response.getContent());
@@ -94,13 +103,24 @@ public class IcannHttpReporter {
         response.getContent().close();
       }
       logger.atInfo().log(
-          "Received response code %d with content: %s\n\nResponse content in hex: %s",
+          "Received response code %d\n\n"
+              + "Response headers: %s\n\n"
+              + "Response content in UTF-8: %s\n\n"
+              + "Response content in HEX: %s",
           response.getStatusCode(),
+          response.getHeaders(),
           new String(content, UTF_8),
           BaseEncoding.base16().encode(content));
-      XjcIirdeaResult result = parseResult(content);
-      if (result.getCode().getValue() != 1000) {
+      // For reasons unclear at the moment, when we parse the response content using UTF-8 we get
+      // garbled texts. Since we know that an HTTP 200 response can only contain a result code of
+      // 1000 (i. e. success), there is no need to parse it.
+      if (response.getStatusCode() == HttpStatusCodes.STATUS_CODE_BAD_REQUEST) {
         success = false;
+        // To debug if there is a problem with our parsing, we wrap the response and print the stack
+        // trace of it. As far as we can tell, the stack trace for such an exception contains the
+        // response content that is decoded correctly using the expected charset.
+        new HttpResponseException(response).printStackTrace();
+        XjcIirdeaResult result = parseResult(content);
         logger.atWarning().log(
             "PUT rejected, status code %s:\n%s\n%s",
             result.getCode(), result.getMsg(), result.getDescription());
diff --git a/core/src/test/java/google/registry/reporting/icann/IcannHttpReporterTest.java b/core/src/test/java/google/registry/reporting/icann/IcannHttpReporterTest.java
index b798fe2c7..262f1dae8 100644
--- a/core/src/test/java/google/registry/reporting/icann/IcannHttpReporterTest.java
+++ b/core/src/test/java/google/registry/reporting/icann/IcannHttpReporterTest.java
@@ -21,6 +21,8 @@ import static google.registry.testing.DatastoreHelper.createTld;
 import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
+import com.google.api.client.http.HttpResponseException;
+import com.google.api.client.http.HttpStatusCodes;
 import com.google.api.client.http.LowLevelHttpRequest;
 import com.google.api.client.http.LowLevelHttpResponse;
 import com.google.api.client.testing.http.MockHttpTransport;
@@ -50,7 +52,8 @@ class IcannHttpReporterTest {
   AppEngineExtension appEngineRule =
       new AppEngineExtension.Builder().withDatastoreAndCloudSql().build();
 
-  private MockHttpTransport createMockTransport(final ByteSource iirdeaResponse) {
+  private MockHttpTransport createMockTransport(
+      int statusCode, final ByteSource iirdeaResponse) {
     return new MockHttpTransport() {
       @Override
       public LowLevelHttpRequest buildRequest(String method, String url) {
@@ -59,7 +62,7 @@ class IcannHttpReporterTest {
               @Override
               public LowLevelHttpResponse execute() throws IOException {
                 MockLowLevelHttpResponse response = new MockLowLevelHttpResponse();
-                response.setStatusCode(200);
+                response.setStatusCode(statusCode);
                 response.setContentType(PLAIN_TEXT_UTF_8.toString());
                 response.setContent(iirdeaResponse.read());
                 return response;
@@ -71,6 +74,10 @@ class IcannHttpReporterTest {
     };
   }
 
+  private MockHttpTransport createMockTransport(final ByteSource iirdeaResponse) {
+    return createMockTransport(HttpStatusCodes.STATUS_CODE_OK, iirdeaResponse);
+  }
+
   @BeforeEach
   void beforeEach() {
     createTld("test");
@@ -117,10 +124,21 @@ class IcannHttpReporterTest {
   @Test
   void testFail_BadIirdeaResponse() throws Exception {
     IcannHttpReporter reporter = createReporter();
-    reporter.httpTransport = createMockTransport(IIRDEA_BAD_XML);
+    reporter.httpTransport =
+        createMockTransport(HttpStatusCodes.STATUS_CODE_BAD_REQUEST, IIRDEA_BAD_XML);
     assertThat(reporter.send(FAKE_PAYLOAD, "test-transactions-201706.csv")).isFalse();
   }
 
+  @Test
+  void testFail_transportException() throws Exception {
+    IcannHttpReporter reporter = createReporter();
+    reporter.httpTransport =
+        createMockTransport(HttpStatusCodes.STATUS_CODE_FORBIDDEN, ByteSource.empty());
+    assertThrows(
+        HttpResponseException.class,
+        () -> reporter.send(FAKE_PAYLOAD, "test-transactions-201706.csv"));
+  }
+
   @Test
   void testFail_invalidFilename_nonSixDigitYearMonth() {
     IcannHttpReporter reporter = createReporter();