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Must I Use My ISP SMTP Mail Server?

By bemcd ·

I am trying to configure POP3 email addresses in Outlook. For incoming POP3 I can use my domain mail server, which works fine. However, my hosting service has informed me that I MUST use my ISP outgoing SMTP mail server.

Is there any way around this? My ISP mail server will not allow me to send mail to several different web based mail services like and hotmail.

I want to be able to specify my domain mail server for both incoming and outgoing and don't understand why I can't do this. Is this unique to my hosting service, or is it a rule among them all?

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by david In reply to Must I Use My ISP SMTP Ma ...

Some Hosting services do this. Generally if you ask them nicely they will let you use their SMTP but they put in their general info use your ISP to reduce the amount of traffic and to stop them getting banned if you use them for spamming.

What is the problemn with sending mail through your ISP to hotmail? I have not had that problem. Perhaps you should contact your ISP and ask them.

It could be that they will not allow you to send mail through them to certain domains if you are sendingit with a non-matching reply to address. This is part of the mess which is known as relaying. Again it is stopped as an anti-spam measure (or to overcome blacklisting by anti-spam programs.

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