IIS and SMTP - Local SMTP server instead of my ISP:s???

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Author Local SMTP server instead of my ISP:s???
Bo Berglund

2006-05-05, 1:18 pm

I have run into a problem with my ISP's SMTP server in that they have
started to do content filtering on *outgoing* email! They actually
block all email going out that contain attached files of type .exe
..com .vbs, .pif, .scr .bat .cmd .com .mim .b64 .bhx .hqx .xxe .uu .uue

And it does not matter if I embed the exe files I want to send to my
customers inside a zipfile, the ISP filter still locates the file. And
on top of this if I rename my .exe to something else like .hej and the
zip to .tjo or similar it still manages to find the exe file and stop
the email. What a pain!

So I figured that I should try to use the Virtual SMTP server
installed with my IIS installation (I am using XP Pro SP2) for sending
mail.
But when I had configured it as good as I figured I could and tested
sending mail from my mail client, it reaches the server (I see this by
the Symantec antivirus scan message) but then nothing! How can I get
the mail to actually leave the Virtual SMTP server and reach the
recipient?

I am sitting on a home LAN behind a DLINK router behind an ADSL2+
modem with a 7 Mbps broadband access. The PC:s on the LAN have
addresses in the range 192.168.0.130 to 254.

Any pointers to documentation of how to set up a system like this are
really welcome! I must be able to send the result of my work on to my
customers! (I am a software developer)

/Bo


Bo Berglund
bo.berglund(at)nospam.telia.com
Jeff Cochran

2006-05-15, 1:18 am

On Fri, 05 May 2006 19:16:56 +0200, Bo Berglund <boberglund@home.se>
wrote:

>I have run into a problem with my ISP's SMTP server in that they have
>started to do content filtering on *outgoing* email! They actually
>block all email going out that contain attached files of type .exe
>.com .vbs, .pif, .scr .bat .cmd .com .mim .b64 .bhx .hqx .xxe .uu .uue
>
>And it does not matter if I embed the exe files I want to send to my
>customers inside a zipfile, the ISP filter still locates the file. And
>on top of this if I rename my .exe to something else like .hej and the
>zip to .tjo or similar it still manages to find the exe file and stop
>the email. What a pain!
>
>So I figured that I should try to use the Virtual SMTP server
>installed with my IIS installation (I am using XP Pro SP2) for sending
>mail.
>But when I had configured it as good as I figured I could and tested
>sending mail from my mail client, it reaches the server (I see this by
>the Symantec antivirus scan message) but then nothing! How can I get
>the mail to actually leave the Virtual SMTP server and reach the
>recipient?
>
>I am sitting on a home LAN behind a DLINK router behind an ADSL2+
>modem with a 7 Mbps broadband access. The PC:s on the LAN have
>addresses in the range 192.168.0.130 to 254.
>
>Any pointers to documentation of how to set up a system like this are
>really welcome! I must be able to send the result of my work on to my
>customers! (I am a software developer)


How to Enable and Interpret the Smtp.log File:
http://support.microsoft.com/defaul...kb;en-us;155455

XIMS: SMTP Reply Codes (RFC 821):
http://support.microsoft.com/defaul...kb;en-us;257186

HOW TO: Test Windows 2000 IIS SMTP Services Manually
http://support.microsoft.com/defaul...kb;en-us;286421

HOW TO: Test SMTP Services Manually in Windows Server 2003
http://support.microsoft.com/defaul...kb;en-us;323350

How to create additional SMTP virtual servers in Windows 2000 and in
Windows Server 2003:
http://support.microsoft.com/defaul...kb;en-us;303707

Setting Up SMTP Domains for Inbound and Relay E-Mail in Exchange 2000
Server and Exchange Server 2003:
http://support.microsoft.com/defaul...kb;en-us;260973

How To Configure a Remote Domain for an Internet Information Services
SMTP Mail Relay Server in Windows Server 2003:
http://support.microsoft.com/defaul...kb;en-us;324272

Install and Configure the Email Server in Windows Server 2003 +
Outlook Express:
http://www.ilopia.com/Articles/Wind...mailServer.aspx

Configuring SMTP Virtual Server Relay Restrictions (IIS 6.0):
http://www.microsoft.com/technet/pr...fdc8723b8a.mspx

SMTP Administration (IIS 6.0):
http://www.microsoft.com/technet/pr...1d2e996a12.mspx

Jeff
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