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Re: Question about open relay
Victor.Duchovni
morganstanley.com
Date: Wed Oct 01 2003 - 19:20:43 CDT
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On Wed, 1 Oct 2003, Jason Williams wrote:
> mynetworks = 192.168.0.0/24, 127.0.0.0/8
> smtpd_recipient_restrictions =
> permit_mynetworks,
> reject_unauth_destination,
Excellent you now have a closed relay.
> reject_invalid_hostname,
> reject_non_fqdn_sender,
> reject_unknown_sender_domain,
> reject_unauth_pipelining,
> check_recipient_access hash:/etc/postfix/maps/access,
> reject_rbl_client relays.ordb.org,
> reject_rbl_client list.dsbl.org,
> reject_rbl_client sbl.spamhaus.org,
> permit
And all other restrictions are applied after ensuring you are not
allowing unauthorized relaying. That's all there is to it.
--
Viktor.
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