diff --git a/src/Correo.MailKit/MailKitSmtpClient.cs b/src/Correo.MailKit/MailKitSmtpClient.cs
index ba47158..3a2d2b2 100644
--- a/src/Correo.MailKit/MailKitSmtpClient.cs
+++ b/src/Correo.MailKit/MailKitSmtpClient.cs
@@ -3,6 +3,7 @@ using Correo.Abstractions.Extensions;
 using Correo.MailKit.Extensions;
 using Correo.MailKit.Models;
 using MailKit.Net.Smtp;
+using MailKit.Security;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using System;
@@ -26,7 +27,7 @@ namespace Correo.MailKit
             var options = _optionsAccessor.Value;
 
             _smtpClient = new SmtpClient();
-            _smtpClient.Connect(options.Server, options.Port, options.EnableSsl);
+            _smtpClient.Connect(options.Server, options.Port, options.EnableSsl ? SecureSocketOptions.Auto : SecureSocketOptions.None);
 
             if (options.UseAuthentication)
                 _smtpClient.Authenticate(options.Authentication.UserName, options.Authentication.Password);