How to restrict the outgoing mail with sendmail

[nilesh vaghela]

Dear All,

How we can have some restriction to the outgoing mail?

for example.

Need to have restriction of size 10MB for some of user for outgoing mail.

If one user send the mail to abc at xyz.com will go to admin and after approval
will be delivered to the destination.

Simillar thing.

I think milter is right solution but do not know which milter to be explore.

-- 
Nilesh Vaghela
ElectroMech
Redhat Channel Partner and Training Partner
74, Nalanda Complex, Satellite Rd, Ahmedabad
25, The Emperor, Fatehgunj, Baroda.
www.electromech.info