Re: Properly configuring SMTP Service
- From: "Sanford Whiteman" <swhitemanlistens-software@xxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 07 Jun 2007 02:40:33 -0400
This surprises me, since I thought authentication was only necessary
when connecting to the server to send outgoing mail.
In standard public setups, it is true that mail submission to local
addresses does not require login credentials. Submission to remote
addresses typically requires either credentials or an IP in a specific
range(s). There are exceptions to both rules, but you are generally
right.
Anonymous access allowed = authenticated logins are not required to
submit _all_ mail. That doesn't mean that you can send to any address
you want with an unauthenticated session, it just means that _some_
mail can be submitted that way.
bviously, my server must allow other external mail servers to
transmit incoming mail so that I can receive it, yet I do not want
to open up access such that my server could be used as a relay for
spammers, or for any other malicious intent. Is it possible to do
what I want with the built-in SMTP service?
Of course.
Unless you allow *relaying* in all sessions, both authenticated and
unauthenticated (`Access` tab - `Relay`), you are not an open relay.
Set up your server to allow both anonymous and authenticated sessions
(`Access` tab - `Auth`) and use your relay permissions to determine
what people can do in each type of session.
--Sandy
.
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