Hi,
This http://postfix.state-of-mind.de/patrick.koetter/smtpauth/index.html
Will give you the idea on dealing with open
relay.
Regards,
Leon Kolchinsky
From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Lorenzo Musizza
Sent: Wednesday, February 08, 2006
1:57 PM
To: [email protected]
Subject: [Web-cyradm] sender check
Hi all,
I am running a web-cyradm setup;
I have already some postifix checks in place to prevent it to be an open mail
relay.
Unfortunately I recently had a problem since someone abused a mail form on the
webserver running on the same host thus allowed to relay.
Apart from rewriting the mail form script to prevent this, what I would really
like is postfix to check if the enveloper sender from one of my domains really
exists.
e.g. if a mail pretends to be from "
[EMAIL PROTECTED]", but "someone" is not an existing
account, the mail should be rejected.
I know it can be spoofed, but I need it only for localhost (webserver)
generated email.
I only found how to do it with postfix access tables, is there a way to do it
also with web-cyradm mysql lookup?
Thanks in advance,
Lorenzo
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