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hi you can use sasl identification , spamassassin and greylist is a good trial solution cheers philippe Le 31/05/2009 01:18, Tomasz Ciolek a écrit : Two ways: for clients who have thier own mail servers and need to relay and for people with Linux laptops who can run posfix or exim we permi relaying based on TLS certificate presented by the MTA. For those who use Windows based dekstops: pop-before-smtp daemon. All others get greylisted: http://en.wikipedia.org/wiki/Greylisting Cheers Tomasz Ciolek On Sat, May 30, 2009 at 02:54:16PM +0700, Sthu Deus wrote:Good day. If You use an email relay service, how do You protect it: VMs, iptables connections rate limit, ... ? Personally, I have a problem with email sending authorization - how I can separate the users that have not their boxes on our service and therefore I can ban their trials to pick up a password - I can not reduce it even to the local net IPs bt iptables - as port 25 is used for not only for sending our own users but for receiving it for the local users - as I understand. Thank You for Your time. -- To UNSUBSCRIBE, email to debian-security-REQUEST@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org |