MailIntegrationTest may not receive expected number of messages

14:46:24,789 INFO  [org.jboss.as.server] (management-handler-thread - 1) WFLYSRV0010: Deployed "camel-mail-cdi-tests.jar" (runtime-name : "camel-mail-cdi-tests.jar")
14:46:24,804 INFO  [org.wildfly.camel.test.mail.MailIntegrationTest] (pool-98-thread-1) Sending: {from=user1@localhost, to=user2@localhost, message=Hello Kermit}
14:46:29,964 INFO  [com.icegreen.greenmail.smtp.SmtpManager] (Thread-747) Created user login user2@localhost for address user2@localhost with password user2@localhost because it didn't exist before.
14:46:31,966 INFO  [org.wildfly.camel.test.mail.MailIntegrationTest] (pool-98-thread-1) Sending: {from=user1@localhost, to=user2@localhost, message=Hello Kermit}
14:46:33,980 INFO  [org.wildfly.camel.test.mail.MailIntegrationTest] (pool-98-thread-1) Sending: {from=user1@localhost, to=user2@localhost, message=Hello Kermit}
14:46:35,995 INFO  [org.wildfly.camel.test.mail.MailIntegrationTest] (pool-98-thread-1) Sending: {from=user1@localhost, to=user2@localhost, message=Hello Kermit}
14:46:38,006 INFO  [org.apache.camel.component.mock.MockEndpoint] (pool-98-thread-1) Asserting: mock://result is satisfied
14:46:48,010 SEVERE [org.jboss.arquillian.protocol.jmx.JMXTestRunner] (pool-98-thread-1) Failed: org.wildfly.camel.test.mail.MailIntegrationTest.testMailEndpointWithCDIContext: java.lang.AssertionError: mock://result Received message count 0, expected at least 1