bharathan kailath wrote:

one of our customer send mass mails thru our postfix server; is it possible to restrict number of mail recipient for a particular sender!
help appreciated.

Use a policy service. With postfwd, to limit m...@mailer.com to 20 recipients per message, something like:

id=RULE_01; recipient_count=21; sender=m...@mailer.com; action=REJECT

You could also write your own policy service; read:
http://www.postfix.org/SMTPD_POLICY_README.html

--
Sahil Tandon <sa...@tandon.net>

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