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The easiest thing is to setup redundancy in your code to connect to backup smtp servers.
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The easiest thing is to setup redundancy in your code to connect to backup smtp servers.

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Thanks. Can you tell me how to do that? &nbsp;
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Thanks. Can you tell me how to do that?  

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Thanks, good solution. I appreciate the help!
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Thanks, good solution. I appreciate the help!

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SMTP mail services are a very important part of our web applications. &nbsp;We run ASP.NET C# and Classic ASP apps. <br />
<br />
I would like to know several ways to make these services redundant such that if one server goes down the other servers will still send content. <br />
<br />
I have configured DNS, DCs, and AD on our systems, and I speculate that perhaps an abstract name can be used for SMTP services provided by multiple servers. If this is the case, how can I set it up using the MSFT DNS console? <br />
<br />
Is there a way to do this in programming, both in Classic ASP VBScript, and in C#/.NET? In programming, there would need to be some test of SMTP connectivity followed by the attempt to send. Can someone post or link to a code sample? <br />
<br />
Any other methods of accomplishing the same work? <br />
<br />
Thank you, <br />
-KF <br />

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SMTP mail services are a very important part of our web applications.  We run ASP.NET C# and Classic ASP apps. 

I would like to know several ways to make these services redundant such that if one server goes down the other servers will still send content. 

I have configured DNS, DCs, and AD on our systems, and I speculate that perhaps an abstract name can be used for SMTP services provided by multiple servers. If this is the case, how can I set it up using the MSFT DNS console? 

Is there a way to do this in programming, both in Classic ASP VBScript, and in C#/.NET? In programming, there would need to be some test of SMTP connectivity followed by the attempt to send. Can someone post or link to a code sample? 

Any other methods of accomplishing the same work? 

Thank you, 
-KF 


SMTP redundancies: How do I build them into my apps?

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.

Email Protocols

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.