diff --git a/Lombiq.Hosting.Tenants.EmailQuotaManagement.Tests.UI/Extensions/EmailQuotaManagementExtensions.cs b/Lombiq.Hosting.Tenants.EmailQuotaManagement.Tests.UI/Extensions/EmailQuotaManagementExtensions.cs
index 8087a753..803e600d 100644
--- a/Lombiq.Hosting.Tenants.EmailQuotaManagement.Tests.UI/Extensions/EmailQuotaManagementExtensions.cs
+++ b/Lombiq.Hosting.Tenants.EmailQuotaManagement.Tests.UI/Extensions/EmailQuotaManagementExtensions.cs
@@ -7,7 +7,8 @@ public static class EmailQuotaManagementExtensions
 {
     public static void SetEmailQuotaManagementOptionsForUITest(
         this OrchardCoreUITestExecutorConfiguration configuration,
-        long maximumEmails)
+        long maximumEmails,
+        string emailHost = "localhost")
     {
         configuration.OrchardCoreConfiguration.BeforeAppStart +=
             (_, argumentsBuilder) =>
@@ -17,9 +18,14 @@ public static void SetEmailQuotaManagementOptionsForUITest(
                         "OrchardCore:Lombiq_Hosting_Tenants_EmailQuotaManagement:EmailQuotaPerMonth",
                         maximumEmails);
 
+                argumentsBuilder
+                    .AddWithValue(
+                        "OrchardCore:SmtpSettings:Host",
+                        emailHost);
+
                 return Task.CompletedTask;
             };
 
         configuration.UseSmtpService = true;
     }
-}
+}
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