I am using local IIS 6.0 SMTP service to send emails from ASP.NET application.
I am having the following issues:
Emails are being delayed from 1 hour to 24 hours, and our traffic is only increasing
No UI to quickly see what is going on. How many emails sent. Bad Emails, Queue, etc...
Have to install IIS 6.0 just to run SMTP service. Microsoft didn't include it in IIS 7.0, so not sure if they will be supporting it in the future.
Seems to send emails in single thread (not sure about this one).
I could use one of the cloud services like Amazon Simple Email, but it would cost me hundreds of dollars a month. I would like to keep it local since our hosting provider has plenty of bandwidth.
What are the alternatives to IIS 6.0 SMTP service?
There are a couple of options available to you as I see it but each has their own pro's and cons.
A local mail server application (eg: Exchange server) to manage your mail queue
pro - you retain total control
con - you retain total responsibility
con - depending on the email type and volume you could end up getting blacklisted
A cloud mail provider that you are obviously aware of.
Arrange with your ISP to direct smtp traffic directly through them rather than using your own smtp service which is forwarded through them anyway. They also may have tools that will allow you to view and control the traffic.
Good luck
AJ
You can use GMail as a free smtp server
Check out the articLE
http://www.geekzone.co.nz/tonyhughes/599
Related
Situation
So I'm thinking about building ASP.NET Core website to host it on Linux based hosting provider. But I still want to use MSSQL database, so best choice for that would be Microsoft Azure.
My Question
Now my question is rather security based, since I know, that hosting them on different providers is totally possible (Regarding this question)
But if I'm about to do so, then how will be my data encrypted? If I'm about to use default HTTP protocol, then I asume, it's not, but if to use HTTPS protocol, it should be encrypted as well? Or how would it work, do I need to setup some other protocols or security for that matter?
My Thoughts
Since Client won't be directly connected with Web Site to Database connection, then there is not chance, that this connection would be listened, yet this "might not be listened" is rather not a far chance. And if HTTPS is included, then all connections should be encrypted, then it should work same with Web Server to Database connection.
You can access Azure SQL from anywhere as long as IP address is in the firewall rule. Since communication to Azure SQL is on SSL/TCP at all times, data is already encrypted.
Ideally, you want to host Azure SQL and web application in same region not to mention same provider. The main reason is your website will be dramatically slow due to network latency, if you host those in different location.
Recently, Azure offers App Service on Linux. It is definitely worth the try, before considering an alternative route.
FYI: Web Apps on Linux does not yet support deployment of .NET Core apps from uncompiled source. You need to publish/compile your .NET Core app locally first, and then push the published site bits to your app.
We are asp.net developers, work in a company.
Development achieved in our development devices/laptops where VS installed.
After development, test operations finished, we publish application into servers.
Our applications need to send emails, so we do that via exchange server through port 25.
Suddenly, during development and test stage, we noticed that we cannot send emails. We contacted exchange server administrator. He told us that he blocked port 25 for our development devices/laptops because Microsoft recommends that.
We asked him how we can achieve development, test operations? He said that you can do that from server! Note that server is for just publishing; it does not have any IDE for developing or test!
Is this true?
Does Microsoft recommend this?
Thats not true. But it is recommended, not to allow anonymous smtp access to Exchange Server.
So there should be a (named) connector for your application on port 25, which is requiring TLS and authentication, which means, your application needs to implement smtp authentication.
In that scenario, the Mailbox you are authenticating with should be monitored for NDRs.
I am a front-end developer so the server stuff goes a bit over my head. Please excuse me if the question is dumb.
I am hosting a wordpress site on our server with contact form 7, but we only have a A-records for www pointing to our site. The email management for said domain is held by a third party.
How is contact form sending the emails to the admins? It is using our hosts SMTP service? I am asking because I am getting the emails on gmail, but the client is not receiving them on his service.
Thank you!
When your server is sending email without you configuring anything, the most likely cause is that it is using the server itself. For that, it does not need to "know" any DNS entries, as it just connects to localhost, which always points to the server itself.
When you receive the mail, and your client is not, this is most likely the result of a spam filter. Have you asked your client to check the spam folder?
The problem of - mainly - shared hosting servers is that they tend to end up on spam lists like that of spamhaus.org etc. which greatly enhances your risk to end up in the spam folder. If you control the server, you could request deblocking or even whitelisting your server, but before you do that, you should be certain that your server is not inadvertedly relaying mail because of a misconfiguation, vulnerability, or outright being hacked. Your applications or the server itself could be configured to use an external smtp server, but that's not something that's easily explained here. Maybe try on serverfault.com?
My q is whats can stop http post from desktop applications ?
e.g
i have a desktop application before it start it's ask users form some information
like a username ad Email ,,, and then take this information and post it on php webpage and php insert it into MySql Server any way the problem now is lets say like
6 of 16 download(s) are registered and the others not so whats can make http post not run correctly ?
Note :
Software tested on every windows os and runs ok
Software run with all anti viruses programs ok
Software add port throw windows firewall ok
So whats can make http post not run correctly ?
Regards
There are many things that could stop communication between your application, and your database.
If the client has a firewall that requires authorisation for outbound requests.
If the client has to connect via a proxy server, and you application is not proxy aware
If your website fails to process your request (perhaps, if the MySql server is too busy to allow connections, etc.)
So, consider an end user behind a WebSense proxy that additionally allows administrators to filter out unwanted traffic. If your application is not proxy server aware, it will fail to connect; If your application is proxy aware, and whatever WebSense category you fall into is filtered for that client, it will also fail to connect.
We are migrating from a dedicated server with a local virtual SMTP server to Windows Azure. As far as I can tell Windows Azure does not allow a local SMTP server to be setup in IIS. The SMTP Server option in the management console is missing. How would I setup an email relay so that I can have a .net web application send emails from a Windows Server 2012 virtual machine in Azure?
This is more like corollary to what #mcollier has stated. Given that you are already on Azure and you get 25,000 free emails (there are higher plans as well) with your subscription as well.
You can configure a Virtual SMTP server which relays to the sendgrid services. For the development perspective you will have the view of using your own SMTP server / service. Setting up a sendgrid based service is explained in this link.
I have used sendgrid earlier and my experience with this was amazing. As #mcollier has pointed out, using services like Sendgrid will give good chance of staying away from spam problem, if you try to setup and use the SMTP service of your own because of the reverse lookup etc.
PS: The above Virtual SMTP Server can be replaced with Amazon SES, which is equivalently a good service. Check out more info here.
First, assuming you're using a Windows Azure IaaS VM. Correct? If so, I think you need to enable that role/feature in Windows Server.
Second, why the need to send emails from that specific server? Would a service like SendGrid work? One problem people sometimes have with email servers in Windows Azure is the domain of your service (something.cloudapp.net) does not match your vanity domain when a reverse DNS lookup is performed. This could cause the email to be flagged as spam (since you don't technically own the sending domain, something.cloudapp.net).
I developed an direct relay application using the normal RFC email commands and lock that on my application, but strange that some test emails get delivered using the relay on windows AZURE VM, and all other mails are not getting any bounce response, and making a sense that every email is being delivering,
This is strange behaviour on azure vm.
so it means you can't send email using azure vm as a smtp mail server, if like to test then simply download promailer marketing manager from jsmtp.com