Re: relay access denied

10 msg	postfix relaying
2 msg	Restrict sending external mail depending on LDA...
2 msg	monitoring emails for a particular user
1 msg	loops back to myself with antivirus gateway...
2 msg	cyrus and postfix issue...
2 msg	Deny messages to local mailing lists
2 msg	Translation delivery error messages
3 msg	Why smtp instead of relay?
2 msg	Chroot Timestamps

relay access denied
\ Alexandros Fragkiadakis (16 May 2007)
. \ Magnus Bäck (16 May 2007)
. . \ Alexandros Fragkiadakis (16 May 2007)
. . \ Magnus Bäck (16 May 2007)
. . . \ Alexandros Fragkiadakis (16 May 2007)
. \ Alexandros Fragkiadakis (16 May 2007)
. . \ Magnus Bäck (16 May 2007)
. . . \ Alexandros Fragkiadakis (16 May 2007)
. . . . \ Alexandros Fragkiadakis (16 May 2007)
. . . . . \ Magnus Bäck (16 May 2007)
. . . . . . \ Alexandros Fragkiadakis (16 May 2007)
. . . . . . . \ Noel Jones (17 May 2007)
. . . . . . . \ mouss (17 May 2007)
. \ David Maya (4 Jun 2007)
. . \ Evan Platt (4 Jun 2007)
. . \ mouss (4 Jun 2007)
. \ Evan Platt (4 Jun 2007)
. . \ Markus SchÃ¶nhaber (4 Jun 2007)

7 msg	Question about Successful Mail Delivery Report
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4 msg	[urgent] how to use remote mail server ?
1 msg	[Re: sasl problem]
2 msg	off-topic?
7 msg	smtpd_milter question
1 msg	Off-topic: Linux distro compare site

Subject:	Re: relay access denied
Group:	Postfix-users
From:	mouss
Date:	17 May 2007

Alexandros Fragkiadakis wrote:
> Using this configuration, a non-authenticated client using the account
> myuser1@mydomain1 can still use my server (as outgoing smtp server) to
> send emails to myuser2@domain1.
>
> He will be blocked if he tries to send emails to
> anotheruser@anotherdomain (no problem with this).
>
> Is it possible to block non-authenticated clients trying to use my server
> as outgoing server to post emails to my internal domains?
>

Require authentication if sender is in your domain.

http://www.postfix.org/postconf.5.html#smtpd_sender_login_maps
http://www.postfix.org/postconf.5.html#reject_sender_login_mismatch