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Visual Basic Email

4
Dear Friends,

I am developing an Application which sends Email using SMTP Server. I need to know that how can I add proxy server support to my application as my client is using ISA Firewall as Proxy Server. In other words, how I can drive SMTP traffic from Proxy?

Thanks in advance.
Dec 22 '08 #1
1 1463
danp129
323 Expert 256MB
The only feature I can think of that an SMTP only application may need is the option to authenticate through POP before sending through SMTP. I have never seen an SMTP client that you specify proxy settings for SMTP and I doubt I ever will because I don't think it's possible, have you seen something?... From the SMTP application perspective, there's nothing I can think of that you need to do. You can take a look at the various applications that call themselves an "SMTP Proxy" and see that they do not require any special settings to utilize them.

For value to your customer you can read up on SMTP Proxy/Relay and learn how it works and why it's not a special feature you need to code in to utilize. That way you can recommend to use a relay if you feel it may help. You should also read up a little on ISA server so you understand that it can be a web cache server, firewall/gateway, or both, and (when firewall services are used) they can add access rules to allow outbound SMTP access to specific groups of authenticated (domain authentication, not code in your application) users.

Here you can find Articles on the right navigation about ISA server:
Understanding Internet Security and Acceleration Server (ISA Server)

Or here:
Microsoft ISA Server Firewall Resource Site: Articles & Tutorials
Dec 23 '08 #2

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