From: Hector . (hmontalvolinuxmail.org)
Date: Wed Dec 01 2004 - 16:27:47 CST

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Ok, but, for example, if someone know all my accounts, He can to send mail each one, for example, I did a test from other host

telnet my.postfix.com 25
250-PIPELINING
250-SIZE 10240000
250-ETRN
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250 8BITMIME
250-my.postfix.com
250-PIPELINING
250-SIZE 10240000
250-ETRN
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250 8BITMIME
mail from:gggmy.postfix.com
250 Ok
rcpt to:gggmy.postfix.com
250 Ok
data
354 End data with <CR><LF>.<CR><LF>
Send All mail your want
.
250 Ok: queued as 5C9C165D52

I want all mail that use my smtp server, require Auth.
Thanks!

----- Original Message -----
From: "Charles Quesenberry" <quesenberrypeak.org>
To: postfix-userspostfix.org
Subject: Re: Postfix smtp auth local users
Date: Wed, 01 Dec 2004 12:35:08 -0800

>
> On Wed, 2004-12-01 at 14:16 -0600, Hector . wrote:
> > Hello ,
> >
> > I am reading some Faq about SMTP AUTH and I have followed the
> > steps in the document, but have a problem,
> >
> > I use virtual domain in Ldap and PAM AUTH (sasl), my problem is
> > if I am a valid user (ldap user) and send a email to valid users
> > in ldap, postfix dont need AUTH, I can send email free. I was
> > looking for any mistake or directive in main.cf but dont found
> > nothing.
> >
>
> This is correct behavior.
>
> > Do you know What is happening?
> >
>
> SMTPD AUTH is used to permit relaying, i.e. sending mail to a
> destination not listed in "mydestination". Postfix will accept mail for
> your own users without requiring the sender to authenticate. Otherwise,
> every single person who wished to send you an email would be required to
> authenticate to your server (more precisely, the sending server would
> have to authenticate to your server). How would you receive messages
> from this list?
>
> But that sure would cut down on spam (and all email originating outside
> your domain). ;)
>
> Chuck

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