SECURITY-1813

jenkinsci · Sep 3, 2020 · e1893c6 · e1893c6
1 parent a652163
commit e1893c6
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/main/java/hudson/tasks/Mailer.java b/src/main/java/hudson/tasks/Mailer.java
@@ -383,6 +383,9 @@ private static Session createSession(String smtpHost, String smtpPort, boolean u
                     props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
             	}
 				props.put("mail.smtp.socketFactory.fallback", "false");
+            	if (props.getProperty("mail.smtp.ssl.checkserveridentity") == null) {
+                    props.put("mail.smtp.ssl.checkserveridentity", "true");
+                }
 			}
 			if(useTls){
                 /* This allows the user to override settings by setting system properties and