diff --git a/applications/source/mail-source/src/test/java/org/springframework/cloud/stream/app/source/file/MailSourceTests.java b/applications/source/mail-source/src/test/java/org/springframework/cloud/stream/app/source/file/MailSourceTests.java
index df5eac63..5b8234be 100644
--- a/applications/source/mail-source/src/test/java/org/springframework/cloud/stream/app/source/file/MailSourceTests.java
+++ b/applications/source/mail-source/src/test/java/org/springframework/cloud/stream/app/source/file/MailSourceTests.java
@@ -34,6 +34,8 @@ import org.springframework.cloud.stream.binder.test.TestChannelBinderConfigurati
 import org.springframework.context.annotation.Import;
 import org.springframework.messaging.Message;
 import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -58,6 +60,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 class MailSourceTests {
 	private static GreenMail mailServer;
 	private static GreenMailUser mailUser;
+
 	@BeforeAll
 	public static void setup() {
 		ServerSetup imap = ServerSetupTest.IMAP.dynamicPort();
@@ -65,8 +68,11 @@ class MailSourceTests {
 		mailServer = new GreenMail(imap);
 		mailUser = mailServer.setUser("user", "pw");
 		mailServer.start();
-		String imapPort = Integer.toString(mailServer.getImap().getServerSetup().getPort());
-		System.setProperty("test.mail.server.port", imapPort);
+	}
+
+	@DynamicPropertySource
+	static void mongoDbProperties(DynamicPropertyRegistry registry) {
+		registry.add("test.mail.server.port", mailServer.getImap().getServerSetup()::getPort);
 	}
 
 	@AfterAll
diff --git a/functions/supplier/mail-supplier/pom.xml b/functions/supplier/mail-supplier/pom.xml
index 5ee72725..e6975b42 100644
--- a/functions/supplier/mail-supplier/pom.xml
+++ b/functions/supplier/mail-supplier/pom.xml
@@ -13,20 +13,11 @@
     <name>mail-supplier</name>
     <description>Mail Supplier</description>
 
-    <properties>
-        <jakarta-mail.version>2.1.0</jakarta-mail.version>
-    </properties>
-
     <dependencies>
         <dependency>
             <groupId>org.springframework.integration</groupId>
             <artifactId>spring-integration-mail</artifactId>
         </dependency>
-        <dependency>
-            <groupId>jakarta.mail</groupId>
-            <artifactId>jakarta.mail-api</artifactId>
-            <version>${jakarta-mail.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.eclipse.angus</groupId>
             <artifactId>jakarta.mail</artifactId>
@@ -34,19 +25,9 @@
         </dependency>
         <dependency>
             <groupId>com.icegreen</groupId>
-            <artifactId>greenmail-junit5</artifactId>
-            <version>2.0.0-alpha-3</version>
+            <artifactId>greenmail</artifactId>
+            <version>2.0.0</version>
             <scope>test</scope>
-            <exclusions>
-                <exclusion>
-                    <groupId>com.sun.mail</groupId>
-                    <artifactId>jakarta.mail</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>jakarta.activation</groupId>
-                    <artifactId>jakarta.activation-api</artifactId>
-                </exclusion>
-            </exclusions>
         </dependency>
     </dependencies>
 </project>
diff --git a/functions/supplier/mail-supplier/src/test/java/org/springframework/cloud/fn/supplier/mail/AbstractMailSupplierTests.java b/functions/supplier/mail-supplier/src/test/java/org/springframework/cloud/fn/supplier/mail/AbstractMailSupplierTests.java
index 08ef475a..af5362cd 100644
--- a/functions/supplier/mail-supplier/src/test/java/org/springframework/cloud/fn/supplier/mail/AbstractMailSupplierTests.java
+++ b/functions/supplier/mail-supplier/src/test/java/org/springframework/cloud/fn/supplier/mail/AbstractMailSupplierTests.java
@@ -23,36 +23,36 @@ import com.icegreen.greenmail.util.GreenMail;
 import com.icegreen.greenmail.util.GreenMailUtil;
 import com.icegreen.greenmail.util.ServerSetup;
 import com.icegreen.greenmail.util.ServerSetupTest;
-import org.junit.jupiter.api.AfterAll;
-import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.BeforeEach;
 import reactor.core.publisher.Flux;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.integration.dsl.StandardIntegrationFlow;
-import org.springframework.integration.test.context.SpringIntegrationTest;
 import org.springframework.messaging.Message;
 import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
 
-@SpringIntegrationTest(noAutoStartup = "*")
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.NONE, properties = {
-	"mail.supplier.mark-as-read=true",
-	"mail.supplier.delete=false",
-	"mail.supplier.user-flag=testSIUserFlag",
-	"mail.supplier.java-mail-properties=mail.imap.socketFactory.fallback=true\\n mail.store.protocol=imap\\n mail.debug=true"})
+		"mail.supplier.mark-as-read=true",
+		"mail.supplier.delete=false",
+		"mail.supplier.user-flag=testSIUserFlag",
+		"mail.supplier.java-mail-properties=mail.imap.socketFactory.fallback=true\\n mail.store.protocol=imap\\n mail.debug=true"})
 @DirtiesContext
 public abstract class AbstractMailSupplierTests {
+
 	protected static GreenMail mailServer;
 
 	protected static GreenMailUser mailUser;
 
 	@Autowired
 	protected Supplier<Flux<Message<?>>> mailSupplier;
+
 	@Autowired
 	protected StandardIntegrationFlow integrationFlow;
+
 	protected void sendMessage(String subject, String body) {
 		mailUser.deliver(GreenMailUtil.createTextEmail("bar@bax", "test@test", subject, body, mailServer.getSmtp().getServerSetup()));
 	}
@@ -66,34 +66,21 @@ public abstract class AbstractMailSupplierTests {
 		ServerSetup smtp = ServerSetupTest.SMTP.dynamicPort();
 		smtp.setServerStartupTimeout(10000);
 
-		mailServer = new GreenMail(new ServerSetup[]{imap, pop3, smtp});
+		mailServer = new GreenMail(new ServerSetup[] {imap, pop3, smtp});
 		mailUser = mailServer.setUser("user", "pw");
 		mailServer.start();
-		String imapPort = Integer.toString(mailServer.getImap().getServerSetup().getPort());
-		String pop3Port = Integer.toString(mailServer.getPop3().getServerSetup().getPort());
-		String smtpPort = Integer.toString(mailServer.getPop3().getServerSetup().getPort());
-		System.setProperty("test.mail.server.imap.port", imapPort);
-		System.setProperty("test.mail.server.pop3.port", pop3Port);
-		System.setProperty("test.mail.server.smtp.port", smtpPort);
 	}
 
-	@BeforeEach
-	void start() {
-		integrationFlow.start();
-	}
-
-	@AfterEach
-	void stop() {
-		integrationFlow.stop();
-	}
-
-	@AfterAll
-	public static void cleanup() {
-		System.clearProperty("test.mail.server.port");
+	@DynamicPropertySource
+	static void mongoDbProperties(DynamicPropertyRegistry registry) {
+		registry.add("test.mail.server.imap.port", mailServer.getImap().getServerSetup()::getPort);
+		registry.add("test.mail.server.pop3.port", mailServer.getPop3().getServerSetup()::getPort);
+		registry.add("test.mail.server.smtp.port", mailServer.getSmtp().getServerSetup()::getPort);
 	}
 
 	@SpringBootApplication
 	public static class MailSupplierTestApplication {
 
 	}
+
 }
diff --git a/stream-applications-build/pom.xml b/stream-applications-build/pom.xml
index 9dc766f4..dcb76140 100644
--- a/stream-applications-build/pom.xml
+++ b/stream-applications-build/pom.xml
@@ -40,7 +40,6 @@
         <spring-kafka.version>3.0.7</spring-kafka.version>
         <spring-rabbit.version>3.0.4</spring-rabbit.version>
         <spring.version>6.0.9</spring.version>
-        <spring-integration.version>6.0.5</spring-integration.version>
 
         <spring-cloud.version>2022.0.3</spring-cloud.version>
         <spring-cloud-starters.version>4.0.3</spring-cloud-starters.version>