From: Charles Quesenberry (no email)
Date: Wed Dec 01 2004 - 15:35:08 EST
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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