Add response to SmtpResult

src/OrchardCore.Build/Dependencies.props

@@ -24,12 +24,12 @@
     <PackageManagement Include="Lucene.Net.Analysis.Common" Version="4.8.0-beta00015" />
     <PackageManagement Include="Lucene.Net.QueryParser" Version="4.8.0-beta00015" />
     <PackageManagement Include="Lucene.Net.Spatial" Version="4.8.0-beta00015" />
-    <PackageManagement Include="MailKit" Version="2.15.0" />
+    <PackageManagement Include="MailKit" Version="3.0.0" />
     <PackageManagement Include="Markdig" Version="0.26.0" />
     <PackageManagement Include="MessagePack" Version="2.2.60" />
     <PackageManagement Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageManagement Include="Microsoft.SourceLink.GitHub" Version="1.1.1" />
-    <PackageManagement Include="MimeKit" Version="2.15.1" />
+    <PackageManagement Include="MimeKit" Version="3.0.0" />
     <PackageManagement Include="MiniProfiler.AspNetCore.Mvc" Version="4.2.22" />
     <PackageManagement Include="Moq" Version="4.16.1" />
     <PackageManagement Include="ncrontab" Version="3.3.1" />

src/OrchardCore/OrchardCore.Email.Abstractions/SmtpResult.cs

@@ -18,6 +18,11 @@ public class SmtpResult
         /// </summary>
         public IEnumerable<LocalizedString> Errors { get; protected set; }
 
+        /// <summary>
+        /// Get or sets thet response text from the SMTP server.
+        /// </summary>
+        public string Response { get; set; }
+
         /// <summary>
         /// Whether if the operation succeeded or not.
         /// </summary>

src/OrchardCore/OrchardCore.Email.Core/Services/SmtpService.cs

@@ -56,6 +56,8 @@ public async Task<SmtpResult> SendAsync(MailMessage message)
                 return SmtpResult.Failed(S["SMTP settings must be configured before an email can be sent."]);
             }
 
+            SmtpResult result;
+            var response = default(string);
             try
             {
                 // Set the MailMessage.From, to avoid the confusion between _options.DefaultSender (Author) and submitter (Sender)
@@ -78,7 +80,7 @@ public async Task<SmtpResult> SendAsync(MailMessage message)
                 switch (_options.DeliveryMethod)
                 {
                     case SmtpDeliveryMethod.Network:
-                        await SendOnlineMessage(mimeMessage);
+                        response = await SendOnlineMessage(mimeMessage);
                         break;
                     case SmtpDeliveryMethod.SpecifiedPickupDirectory:
                         await SendOfflineMessage(mimeMessage, _options.PickupDirectoryLocation);
@@ -87,12 +89,16 @@ public async Task<SmtpResult> SendAsync(MailMessage message)
                         throw new NotSupportedException($"The '{_options.DeliveryMethod}' delivery method is not supported.");
                 }
 
-                return SmtpResult.Success;
+                result = SmtpResult.Success;
             }
             catch (Exception ex)
             {
-                return SmtpResult.Failed(S["An error occurred while sending an email: '{0}'", ex.Message]);
+                result = SmtpResult.Failed(S["An error occurred while sending an email: '{0}'", ex.Message]); 
             }
+
+            result.Response = response;
+
+            return result;
         }
 
         private MimeMessage FromMailMessage(MailMessage message)
@@ -204,7 +210,7 @@ private bool CertificateValidationCallback(object sender, X509Certificate certif
 
             return false;
         }
-        private async Task SendOnlineMessage(MimeMessage message)
+        private async Task<string> SendOnlineMessage(MimeMessage message)
         {
             var secureSocketOptions = SecureSocketOptions.Auto;
 
@@ -243,8 +249,12 @@ private async Task SendOnlineMessage(MimeMessage message)
                         await client.AuthenticateAsync(_options.UserName, _options.Password);
                     }
                 }
-                await client.SendAsync(message);
+
+                var response = await client.SendAsync(message);
+
                 await client.DisconnectAsync(true);
+
+                return response;
             }
         }
 

test/OrchardCore.Tests/Email/EmailTests.cs

@@ -214,6 +214,30 @@ public async Task SendEmail_WithoutToAndCcAndBccHeaders_ShouldThrowsException()
             Assert.True(result.Errors.Any());
         }
 
+        [Fact]
+        public async Task SendOfflineEmailHasNoResponse()
+        {
+            // Arrange
+            var message = new MailMessage
+            {
+                To = "[email protected]",
+                Subject = "Test",
+                Body = "Test Message"
+            };
+            var settings = new SmtpSettings
+            {
+                DeliveryMethod = SmtpDeliveryMethod.SpecifiedPickupDirectory
+            };
+
+            var smtp = CreateSmtpService(settings);
+
+            // Act
+            var result = await smtp.SendAsync(message);
+
+            // Assert
+            Assert.Null(result.Response);
+        }
+
         private async Task<string> SendEmailAsync(MailMessage message, string defaultSender = null)
         {
             var pickupDirectoryPath = Path.Combine(Directory.GetCurrentDirectory(), "Email");