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LockDown32
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Exchange Server and Local ISPs

We have had an Exchange Server 2003 for years. We have only used it internally for Public Folder sharing. I have hesitated to use it as an external mail server primarily because CenturyLink technically does not allow mail servers on their network and I would have to use CenturyLink as a smarthost on port 25. The whole idea of CenturyLink cutting us off for any reason has stopped me.

   I had another customer try Forefront Online Protection for Exchange for their SBS2011 Server and it appeard as though Microsoft actually let this customer use them as a smarthost on a port other then 25. Maybe I am mistaken.

   Anyway.... are there and services available that will let me use them as a smarthose on some other port other then 25 so I can open this Exchange Server up as a full blown mail server and "get around" getting involved with CenturyLink?
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8/22/2022 - Mon
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LockDown32

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I guess that would be my question. If I use CenturyLink as a SmartHost is that exactly like sending it via Outlook and SMTP?
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Simon Butler (Sembee)

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LockDown32

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That might be a concern. If I use a SmartHost then I need to supply one valid CenturyLink email address and password. That is going to show up as that one email address authenticating and sending a lot of mail (for 120 users) isn't it?
Simon Butler (Sembee)

It could be worse than that.
I have seen some ISPs (and Google) modify the email message so that it comes from the account used to to authenticate the message. That is why no one can use Gmail accounts to relay through.

Your best option might be to use another service.

Simon.
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William Peck
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The ISP SmatyHost would be fine. It's not like they aren't going to allow you to use more than just their email account on a computer. A common practice is to use your ISP's smtp for outbound emails with all your email accounts. Even if they did block you fo some reason. You coud setup the service i mentioned above in 2 seconds. I wouldn't pay for a service until you 100% need it.