[Qmail-it] spamdyke

[Paolo]

ciao a tutti,

volevo segnalare un software che a mio avviso funziona bene e per chi  
non ama troppe ricompilazioni e complicazioni .

il software permette di aggiungere le rbl il graylisting e altri  
controlli in modo semplice, ha un buon logging , e se non piace si fa  
presto a tornare indietro...

io l'ho messo in produzione con un paio di dnsrbl e il greylisting su  
un dominio e devo dire che spamassassin è praticamente idle.

http://freesoftware.silence.org/spamdyke/

alcune specifiche dal sito:

     * Reject the connection if the remote server has no reverse DNS  
entry.
     * Reject the connection if the remote server's reverse DNS entry  
does not resolve.
     * Reject the connection if the remote server's reverse DNS entry  
contains its IP address and a prohibited keyword (like "dynamic").
     * Reject the connection if the remote server's reverse DNS entry  
contains its IP address and ends in a country code (what's the  
japanese word for "dynamic"?).
     * Reject the connection if the remote server's IP address is  
listed in an IP blacklist.
     * Reject the connection if the remote server's reverse DNS entry  
is listed in a domain name blacklist.
     * Reject the connection if the remote server's IP address is  
listed in a given DNS realtime blacklist.
     * Reject the connection if the remote server sends data before  
the SMTP greeting banner is displayed (earlytalkers).
     * Reject the connection if the sender's address is listed in a  
sender blacklist file.
     * Reject the connection if the sender's domain has no mail  
exchanger (i.e. the sender address cannot possibly receive email).
     * Limit recipients to a maximum number per connection. (Yes,  
this goes against RFC 821 but legitimate mail servers retry the  
rejected recipients, spammers don't.)
     * Prevent relaying from unauthorized remote hosts.
     * Graylist(/greylist) incoming mail to specific domains (some  
domains can enjoy graylisting while others do not).
     * Close the connection after a set idle time.
     * Close the connection after a set maximum time.

spamdyke will also:

     * Bypass all filters if the remote server successfully  
authenticates using SMTP AUTH.
     * Bypass all filters if the remote server's IP address is listed  
in an IP whitelist file.
     * Bypass all filters if the remote server's reverse DNS entry is  
listed in a domain name whitelist file.
     * Log meaningful messages to the syslog (very unlike qmail's logs).
     * Log all SMTP traffic to aid diagnosing problems.


fatemi sapere cosa ne pensate.

Ciao
Paolo