smtp fixes

src/Core/Services/Implementations/SmtpMailDeliveryService.cs

@@ -22,8 +22,7 @@ namespace Bit.Core.Services
 
         public Task SendEmailAsync(Models.Mail.MailMessage message)
         {
-            using(var client = new SmtpClient(_globalSettings.Mail.Smtp.Host, _globalSettings.Mail.Smtp.Port))
-            {
+            var client = new SmtpClient(_globalSettings.Mail.Smtp.Host, _globalSettings.Mail.Smtp.Port);
             client.UseDefaultCredentials = false;
             client.EnableSsl = _globalSettings.Mail.Smtp.Ssl;
             client.DeliveryMethod = SmtpDeliveryMethod.Network;
@@ -57,6 +56,7 @@ namespace Bit.Core.Services
             client.SendCompleted += (s, e) =>
             {
                 smtpMessage.Dispose();
+                client.Dispose();
             };
 
             client.SendAsync(smtpMessage, null);
@@ -64,4 +64,3 @@ namespace Bit.Core.Services
         }
     }
 }
-}

util/Setup/Program.cs

@@ -397,7 +397,7 @@ globalSettings__mail__smtp__host=REPLACE
 globalSettings__mail__smtp__username=REPLACE
 globalSettings__mail__smtp__password=REPLACE
 globalSettings__mail__smtp__ssl=true
-globalSettings__mail__smtp__port=465");
+globalSettings__mail__smtp__port=587");
 
                 if(!_push)
                 {