Uprgade from .NET SMTPClient to MailKit as the default smtpclient does not support modern protocols.

CarCareTracker.csproj

@@ -13,6 +13,7 @@
   <ItemGroup>
     <PackageReference Include="CsvHelper" Version="30.0.1" />
     <PackageReference Include="LiteDB" Version="5.0.17" />
+    <PackageReference Include="MailKit" Version="4.5.0" />
     <PackageReference Include="Npgsql" Version="8.0.2" />
     <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="7.3.1" />
   </ItemGroup>

Controllers/VehicleController.cs

@@ -1153,6 +1153,10 @@ namespace CarCareTracker.Controllers
             {
                 numbersArray.Add(upgradeRecords.Min(x => x.Date.Year));
             }
+            if (odometerRecords.Any())
+            {
+                numbersArray.Add(odometerRecords.Min(x => x.Date.Year));
+            }
             var minYear = numbersArray.Any() ? numbersArray.Min() : DateTime.Now.AddYears(-5).Year;
             var yearDifference = DateTime.Now.Year - minYear + 1;
             for (int i = 0; i < yearDifference; i++)

Helper/MailHelper.cs

@@ -1,6 +1,6 @@
 using CarCareTracker.Models;
-using System.Net.Mail;
-using System.Net;
+using MimeKit;
+using MailKit.Net.Smtp;
 
 namespace CarCareTracker.Helper
 {
@@ -15,13 +15,16 @@ namespace CarCareTracker.Helper
     {
         private readonly MailConfig mailConfig;
         private readonly IFileHelper _fileHelper;
+        private readonly ILogger<MailHelper> _logger;
         public MailHelper(
             IConfiguration config,
-            IFileHelper fileHelper
+            IFileHelper fileHelper,
+            ILogger<MailHelper> logger
             ) {
             //load mailConfig from Configuration
             mailConfig = config.GetSection("MailConfig").Get<MailConfig>();
             _fileHelper = fileHelper;
+            _logger = logger;
         }
         public OperationResponse NotifyUserForRegistration(string emailAddress, string token)
         {
@@ -118,7 +121,7 @@ namespace CarCareTracker.Helper
             {
                 foreach (string emailAddress in emailAddresses)
                 {
-                    SendEmail(emailAddress, emailSubject, emailBody, true, true);
+                    SendEmail(emailAddress, emailSubject, emailBody);
                 }
                 return new OperationResponse { Success = true, Message = "Email Sent!" };
             } catch (Exception ex)
@@ -126,33 +129,33 @@ namespace CarCareTracker.Helper
                 return new OperationResponse { Success = false, Message = ex.Message };
             }
         }
-        private bool SendEmail(string emailTo, string emailSubject, string emailBody, bool isBodyHtml = false, bool useAsync = false) {
-            string to = emailTo;
+        private bool SendEmail(string emailTo, string emailSubject, string emailBody) {
             string from = mailConfig.EmailFrom;
             var server = mailConfig.EmailServer;
-            MailMessage message = new MailMessage(from, to);
+            var message = new MimeMessage();
+            message.From.Add(new MailboxAddress(from, from));
+            message.To.Add(new MailboxAddress(emailTo, emailTo));
             message.Subject = emailSubject;
-            message.Body = emailBody;
-            message.IsBodyHtml = isBodyHtml;
-            SmtpClient client = new SmtpClient(server);
-            client.EnableSsl = mailConfig.UseSSL;
-            client.Port = mailConfig.Port;
-            client.Credentials = new NetworkCredential(mailConfig.Username, mailConfig.Password);
-            try
+
+            var builder = new BodyBuilder();
+
+            builder.HtmlBody = emailBody;
+
+            message.Body = builder.ToMessageBody();
+
+            using (var client = new SmtpClient())
             {
-                if (useAsync)
-                {
-                    client.SendMailAsync(message, new CancellationToken());
-                }
-                else
+                client.Connect(server, mailConfig.Port, MailKit.Security.SecureSocketOptions.Auto);
+                client.Authenticate(mailConfig.Username, mailConfig.Password);
+                try
                 {
                     client.Send(message);
+                    return true;
+                } catch (Exception ex)
+                {
+                    _logger.LogError(ex.Message);
+                    return false;
                 }
-                return true;
-            }
-            catch (Exception ex)
-            {
-                return false;
             }
         }
     }

README.md

@@ -30,14 +30,15 @@ Read this [Getting Started Guide](https://docs.lubelogger.com/Getting%20Started)
 [Search Existing Issues](https://github.com/hargata/lubelog/issues)
 
 ## Dependencies
-- Bootstrap
-- LiteDB
-- Npgsql
-- Bootstrap-DatePicker
-- SweetAlert2
-- CsvHelper
-- Chart.js
-- Drawdown
+- [Bootstrap](https://github.com/twbs/bootstrap)
+- [LiteDB](https://github.com/mbdavid/litedb)
+- [Npgsql](https://github.com/npgsql/npgsql)
+- [Bootstrap-DatePicker](https://github.com/uxsolutions/bootstrap-datepicker)
+- [SweetAlert2](https://github.com/sweetalert2/sweetalert2)
+- [CsvHelper](https://github.com/JoshClose/CsvHelper)
+- [Chart.js](https://github.com/chartjs/Chart.js)
+- [Drawdown](https://github.com/adamvleggett/drawdown)
+- [MailKit](https://github.com/jstedfast/MailKit)
 
 ## License
 LubeLogger utilizes a dual-licensing model, see [License](/LICENSE) for more information

Views/Home/_Settings.cshtml

@@ -247,6 +247,7 @@
             <li class="list-group-item">CsvHelper</li>
             <li class="list-group-item">Chart.js</li>
             <li class="list-group-item">Drawdown</li>
+            <li class="list-group-item">MailKit</li>
         </ul>
     </div>
 </div>