Diferencia entre revisiones de «Antispam methods»
De gacq wiki
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*challenge/response: allows unknown senders which aren't on the whitelist or blacklist the chance to confirm that their message is legitimate (non-spam). | *challenge/response: allows unknown senders which aren't on the whitelist or blacklist the chance to confirm that their message is legitimate (non-spam). | ||
*tagged addresses: special-purpose e-mail addresses such as time-dependent addresses, or addresses which only accept certain kinds of communication. These increase the transparency of TMDA for unknown senders by allowing them to safely circumvent the challenge/response system. | *tagged addresses: special-purpose e-mail addresses such as time-dependent addresses, or addresses which only accept certain kinds of communication. These increase the transparency of TMDA for unknown senders by allowing them to safely circumvent the challenge/response system. | ||
| + | |||
| + | This methodology has the advantage of being very selective about what it allows in, while at the same time permitting legitimate, but previously unknown senders to reach you. | ||
=References= | =References= | ||
*[http://www.debian-administration.org/articles/168 Greylisting with Postfix (and other antispam stuff)] | *[http://www.debian-administration.org/articles/168 Greylisting with Postfix (and other antispam stuff)] | ||
*[http://bulma.net/body.phtml?nIdNoticia=2349#configuracion_anti-uce Servidor de correo con Postfix, Cyrus y MySQL administrado desde OpenMailAdmin] | *[http://bulma.net/body.phtml?nIdNoticia=2349#configuracion_anti-uce Servidor de correo con Postfix, Cyrus y MySQL administrado desde OpenMailAdmin] | ||
Revisión del 12:10 19 nov 2006
Contenido
postgrey
apt-get install postgrey netstat -anp | grep 60000 tcp 0 0 127.0.0.1:60000 0.0.0.0:* LISTEN 18478/postgrey.pid
/etc/postfix/main.cf
check_policy_service inet:127.0.0.1:60000
Blacklist
/etc/postfix/main.cf
reject_rbl_client sbl-xbl.spamhaus.org
TMDA
Significantly reduce the amount of spam
- whitelists: accept mail from known, trusted senders.
- blacklists: refuse mail from undesired senders.
- challenge/response: allows unknown senders which aren't on the whitelist or blacklist the chance to confirm that their message is legitimate (non-spam).
- tagged addresses: special-purpose e-mail addresses such as time-dependent addresses, or addresses which only accept certain kinds of communication. These increase the transparency of TMDA for unknown senders by allowing them to safely circumvent the challenge/response system.
This methodology has the advantage of being very selective about what it allows in, while at the same time permitting legitimate, but previously unknown senders to reach you.
