diff --git a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapper.java b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapper.java
index 91a9d58c3a5880cadb70bf5706aafb98e8faa49f..c9a42ae3fa9756dfe2ac34d20bfd73405f85a5fe 100644
--- a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapper.java
+++ b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapper.java
@@ -19,16 +19,14 @@ import de.ozgcloud.nachrichten.postfach.osiv2.gen.model.V1ReplyBehavior;
 @Mapper(unmappedTargetPolicy = ReportingPolicy.ERROR)
 public interface RequestMapper {
 
-	String ORIGIN_SENDER = "OZG-Cloud";
-
 	@Mapping(target = "sequencenumber", source = "vorgangId")
 	@Mapping(target = "body", source = "mailBody")
 	@Mapping(target = "displayName", source = "createdBy")
-	@Mapping(target = "originSender", constant = ORIGIN_SENDER)
+	@Mapping(target = "originSender", ignore = true)
 	@Mapping(target = "replyAction", source = "replyOption")
 	@Mapping(target = "eidasLevel", constant = "LOW")
 	@Mapping(target = "isObligatory", expression = "java( false )")
-	@Mapping(target = "isHtml", expression = "java( true )")
+	@Mapping(target = "isHtml", expression = "java( false )")
 	@Mapping(target = "files", expression = "java( mapMessageExchangeFiles() )")
 	@Mapping(target = "references", expression = "java( mapReferences() )")
 	OutSendMessageRequestV2 mapOutSendMessageRequestV2(PostfachNachricht nachricht);
diff --git a/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapperTest.java b/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapperTest.java
index 957d440acaadcb07690857899f081c151bbadb6b..0e67c3c307449847d9e9e89e936f6812938ae98a 100644
--- a/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapperTest.java
+++ b/src/test/java/de/ozgcloud/nachrichten/postfach/osiv2/transfer/RequestMapperTest.java
@@ -2,7 +2,6 @@ package de.ozgcloud.nachrichten.postfach.osiv2.transfer;
 
 import static de.ozgcloud.nachrichten.postfach.osiv2.factory.PostfachAddressTestFactory.*;
 import static de.ozgcloud.nachrichten.postfach.osiv2.factory.PostfachNachrichtTestFactory.*;
-import static de.ozgcloud.nachrichten.postfach.osiv2.transfer.RequestMapper.*;
 import static org.assertj.core.api.Assertions.*;
 
 import java.util.stream.Stream;
@@ -79,7 +78,6 @@ class RequestMapperTest {
 			assertThat(result.getSequencenumber()).isEqualTo(VORGANG_ID);
 		}
 
-
 		@DisplayName("should map subject")
 		@Test
 		void shouldMapSubject() {
@@ -104,12 +102,12 @@ class RequestMapperTest {
 			assertThat(result.getDisplayName()).isEqualTo(USER_ID);
 		}
 
-		@DisplayName("should map origin sender")
+		@DisplayName("should map origin sender to null")
 		@Test
-		void shouldMapOriginSender() {
+		void shouldMapOriginSenderToNull() {
 			var result = doMapping();
 
-			assertThat(result.getOriginSender()).isEqualTo(ORIGIN_SENDER);
+			assertThat(result.getOriginSender()).isNull();
 		}
 
 		@DisplayName("should map forbidden reply action")
@@ -165,7 +163,7 @@ class RequestMapperTest {
 		void shouldSetIsHtml() {
 			var result = doMapping();
 
-			assertThat(result.getIsHtml()).isTrue();
+			assertThat(result.getIsHtml()).isFalse();
 		}
 
 		@DisplayName("should map files")
@@ -181,7 +179,7 @@ class RequestMapperTest {
 		void shouldMapReferences() {
 			var result = doMapping();
 
-			assertThat(result.getFiles()).isEmpty();
+			assertThat(result.getReferences()).isEmpty();
 		}
 
 		private OutSendMessageRequestV2 doMapping() {