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Internet Mail with Exchange 5.5

By tom.greendyk ·
I'm not very familiar with Exchange and am having trouble getting SMTP mail working properly.

Server: WIndows NT SP6
Clients: Combo of XP Pro and Win 98, all use MS/Outlook as e-mail client
Internet Mail: Verizon (no domain, e.g., an user's e-mail address is

All internal mailboxes work fine. I have an Internet Mail service set up on each client with POP3 and SMTP servers configured with the names that Verizon provided.

However, I cannot get outbound SMTP mail to pass without having the Exchange Internet Mail Service running, which I'm told should not be the case if I'm using a "pure" POP3 account at an external provider.

I also noticed that when an e-mail bounces from AOL, it shows the connecting IP as the server's external IP address. It should be Verizon's mail server, no?

What do I have misconfigured on wither the clients or Exchange to allow SMTP mail to pass outbound without having the Internet Mail Service running?

Thanks for your help.

Tom G

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by p.j.hutchison In reply to Internet Mail with Exchan ...

If using MAPI clients only then you need IMS to tell Exchange where to forward SMTP mail to whether its Unix, Windows or other SMTP server.

If clients are using POP3/SMTP setup then the incoming server can point to Exchange and the outgoing client pointing to Verizon server and NOT exchange.

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by tom.greendyk In reply to Internet Mail with Exchan ...

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