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Setup Exchange to Send/Receive with POP3 Accounts

Posted on 2006-06-01
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Here is the situation.  I have a Dell 2600 server running SBS 2000 with Exchange.  I want to use Exchange to check about 15 pop3 accounts at set intervals, but send email automatically.  Is this possible with the version of Exchange that comes with SBS 2000?  If so, how difficult is it to setup?  I would be classified as a novice with Exchange.

Thanks for your help,
Paul
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Question by:pwtucker
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by:Lee W, MVP
ID: 16812460
Yes, SBS should come with a POP3 connector that will allow the exchange server to check the pop3 accounts every 15 minutes or more and download mail to appropriate users.  Exchange includes its own SMTP services so as long as you have a static IP, you can send mail with it (you can send mail without a static IP, but some companies, like Verizon, may not accept your messages then as lots of spammers use SMTP servers on Dynamic addresses.
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by:pwtucker
ID: 16812506
Do you know of a How To: link that I can use to setup the POP3 connector?  I tried to use the POP3 connector, but did not have much luck.  The biggest problem I have had is we went from hosting our own email to using POP3 because of security.  So if I open back up port 25 for outbound email is there a way with exchange to make it secure?
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by:Lee W, MVP
ID: 16812545
It is possible to JUST use Exchange for a message store - basically, set the mail accounts priority so Exchange is LAST.  You should also be able to create an SMTP connector that connects to your ISP's SMTP server.  Depending on the kind of firewall you have, you could open up an exception ONLY for that IP address, so exchange would forward all outgoing mail to the ISP's mail server which would forward it to the internet.

Why did you decide it was more secure to offload mail?  Technically, it's less secure as now your transmitting e-mail passwords via clear-text over the internet.  NEVER a good idea.

As for a tutorial, I couldn't locate one.  It's not very complicated - but it's also not very good, in my opinion.  MUCH better to have exchange host the e-mail.  That said, if you insist, there are other POP3 connectors you can buy, and If you have more specific questions about the POP3 connector, you probably should ask the question in the SBS topic area with the resident expert in SBS can see it (or post a pointer to this one to get his attention).
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by:pwtucker
ID: 16812561
One more question.  I am using ISA for the firewall with DSL.  I was not successful in keeping the server secure.  Since we are a small company, not being able to afford software that could scan the email and protect against viruses we chose to outsource this piece.  If you can give me some pointers on how to keep my exchange secure I would love to host our email.  Remember though that with SBS everything is on one server...

Thanks so much for your assistance,
Paul
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Lee W, MVP earned 2000 total points
ID: 16812603
Just standard advice, don't open ports you don't need open.  SMTP is needed.  Outlook Web Access and other SBS web sites is NOT, strictly speaking, needed, so you can close port 80, but you might want to enable SSL and put those services on 443.  Keep your server patched (upgrade to SBS2003).  Run backups, enforce complex and lengthy passwords for users, don't give users administrative rights, especially DOMAIN ADMINISTRATIVE rights.  Run antivirus programs and keep them updated.

Frankly, I'd be more worried about my employees downloading a trojan or spyware than I would about my server being hacked.  Most hack attacks are automated, looking for open FTP servers, open SMTP servers, and to exploit unpatched systems so they can hijack them and take them over to attack other systems.  Spyware/Malware tends to do the same thing.  As for securing the Exchange aspect of the server:
http://www.petri.co.il/preventing_exchange_2000_2003_from_relaying.htm
http://www.msexchange.org/

And join a windows security mailing list:
www.ntbugtraq.com is one I like, but certainly not the only one.

Oh yes, and get yourself a subscription to Windows IT Pro - it often has great articles on Windows services and security.
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by:pwtucker
ID: 16812646
Thanks for your advice and assistance...
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