How to enforce users send email with the real from address

4 msg	nested_header_checks
10 msg	Hotmail Problem
4 msg	feedback request: scheduled delivery of messages
1 msg	pkgsrc 'postfix-stress' option (Re: PATCH versi...

How to enforce users send email with the real f...
\ AlxFrag (14 Jan 2008)
. \ mouss (14 Jan 2008)
. . \ AlxFrag (15 Jan 2008)
. . . \ mouss (15 Jan 2008)
. . . . \ AlxFrag (15 Jan 2008)
. . . . . \ mouss (15 Jan 2008)
. . . . . . \ AlxFrag (16 Jan 2008)
. . . . . . . \ mouss (16 Jan 2008)
. . . . . . . . \ AlxFrag (16 Jan 2008)
. \ ram (14 Jan 2008)

15 msg	Catchall setup problem with Virtual domains and...
2 msg	question
5 msg	restrictions
5 msg	problems with virtual alias table
2 msg	some mails bounce with 'Name or service not known'
2 msg	External recipients within same domain
2 msg	~RE: stopping Spam with postfix
9 msg	stopping Spam with postfix
17 msg	Messages stuck in active queue
4 msg	virtual: Command as adress list
1 msg	variable quota policy ideas
2 msg	How to unistall postfix from compiling source(m...
1 msg	Backup mx with local delivery and forwarding fo...
4 msg	Receiving Mail with from mydomain.com from unkn...
10 msg	Which is the best soft for mailscanning?

Subject:	How to enforce users send email with the real from address
Group:	Postfix-users
From:	AlxFrag
Date:	14 Jan 2008

Hi,

i'd like to ask if it is possible to enforce the limitation described in
the following example:

one of my users logs in as myuser@mydomain. He can send emails through
my mail server using any "from address" he wants.
Can i force him to use only the "myuser@mydomain" as from address in
order to be able to send emails through my smtp server?

Regards,

Alex