Dummy POP accounts Exchange and Outlook

Hi,

I have a client that has just changed over from a desktop to a laptop.  On his desktop, I had setup a dummy POP account in Outlook.  This was so he could send emails from his other email address without there being "sent on behalf of...." on the email.  The dummy POP account used the Exchange server on SBS2003 as the SMTP server to send email.  I had the server accept relays from the static IP address of his desktop so it wasn't an open relay.  

Now that he has a laptop and uses wireless, ethernet, RPC - HTTP, how do I set the server to accept email relay for just him as his IP address will be constantly changing.

Thanks

Matt
mattleedcAsked:
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quizwedgeCommented:
What about instead of relaying based on his IP address, you have him authenticate with his account?  When viewing the properties for the dummy POP account, click on "More Settings" and then the "Outgoing Server" tab.  Check "My outgoing server (SMTP) requires authentication and then "Log on using".  Enter his user name and password.  Click OK, next, and then finished.
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mattleedcAuthor Commented:
OK I'll try that.  Do I need to set anything on the server to require authentication?

Thanks

Matt
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B HCommented:
it's already built into the smtp server, just have him use the username format of like:  domain\username
(instead of just "username")  of course, make sure the password is in there

one other thing...  if he's constantly traveling, he will run into problems sending mail thru this account if:
- the network he's on blocks outbound port 25
- the ISP he's on blocks outbound 25 (many do)

to get around this, you could add an additional listening port to your smtp virtual server... for example, add port 2525 to it.  and forward your firewall port 2525 to the server.  and set up his "advanced" settings on this dummy pop account to send out port 2525 instead of just 25.

that way he authenticates, and also bypasses any restrictions various networks might have
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quizwedgeCommented:
I don't remember off the top of my head if there's a separate setting, but go ahead and try it since bryon44035v3 says there's nothing to set up.  The one thing I'd change is that the official alternative SMTP port if 587.  I'd use that instead of 2525 if you find the user unable to send because port 25 is blocked.
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mattleedcAuthor Commented:
Thanks guys, I did have to add the user to the Grant or Deny list on the SMTP virtual server, but its working great.

Matt
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mattleedcAuthor Commented:
great answers
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