diff --git a/src/libraries/System.Net.Mail/src/System/Net/Mail/SmtpNegotiateAuthenticationModule.cs b/src/libraries/System.Net.Mail/src/System/Net/Mail/SmtpNegotiateAuthenticationModule.cs
index 52946d51e0bb6c..a3b236c67ba678 100644
--- a/src/libraries/System.Net.Mail/src/System/Net/Mail/SmtpNegotiateAuthenticationModule.cs
+++ b/src/libraries/System.Net.Mail/src/System/Net/Mail/SmtpNegotiateAuthenticationModule.cs
@@ -63,10 +63,6 @@ internal SmtpNegotiateAuthenticationModule()
                     {
                         return null;
                     }
-                    if (clientContext.IsAuthenticated && resp == null)
-                    {
-                        resp = "\r\n";
-                    }
                 }
                 else
                 {