Pt cei ce au servere - cum sa reduceti mesajele spam.

[Netul]

Poate va e de ajutor in reducerea mesajelor spam.
Trebuie sa aveti acces la server. Aceste setari sunt la nivel global, adica nu trebuie sa scrieti aceste randuri la fiecare cont. Regulile se aplica tuturor conturilor gazduite pe server.

Deschideti fisierul /etc/antivirus.exim
Adaugati la sfarsit:

# START
# Filters all incoming an outgoing mail

logfile /var/log/filter.log 0644
## Common Spam

if
# Header Spam
$header_subject: contains "Pharmaceutical"
or $header_subject: contains "Viagra"
or $header_subject: contains "Penis"
or $header_subject: contains "Pen!s"
or $header_subject: contains "Cialis"
or $header_subject: is "The Ultimate Online Pharmaceutical"
or $header_subject: contains "***SPAM***"
or $header_subject: contains "[SPAM]"
or $header_subject: contains "ephedra"
or $header_subject: contains "microcap"
or $header_subject: contains "slimmer"
or $header_subject: contains "mortgage"
or $header_subject: contains "t-shirts"
or $header_subject: contains "refinance"
or $header_subject: contains "0em"
or $header_subject: contains "oem"
or $header_subject: contains "herb"
or $header_subject: contains "4ve"
or $header_subject: contains "s0ftw4re"
or $header_subject: contains "0ff"
or $header_subject: contains "overdose"
or $header_subject: contains "%o!<"


# Body Spam
or $message_body: contains "Cialis"
or $message_body: contains "Viagra"
or $message_body: contains "V!agra"
or $message_body: contains "Leavitra"
or $message_body: contains "St0ck"
or $message_body: contains "Viaagrra"
or $message_body: contains "s'e_xual"
or $message_body: contains "Cia1iis"
or $message_body: contains "URGENT BUSINESS PROPOSAL"
or $message_body matches "angka[^s]+[net|com|org|biz|info|us|name]+?"
or $message_body matches "v(i|1)agra|vag(i|1)n(a|4)|pen( i|1)s|asu|seks|l(o|0)l(i|1)ta|dewacolok"



then
# Log Message - SENDS RESPONSE BACK TO SENDER
# SUGGESTED TO LEAVE OFF to prevent fail loops
# and more work for the mail system
#fail text "Message has been rejected because it hasn
# triggered our central filter."
logwrite "$tod_log $message_id from $sender_address contained spam keywords"

seen finish
endif


# END
# Filters all incoming an outgoing mail


# START
# All outgoing mail on the server only - what is sent out

#Check forwarders so it doesn't get blocked
#Forwarders still work =)

## FINANCIAL FAKE SENDERS
## Log all outgoing mail from server that matches rules
logfile /var/log/filter.log 0644
if (
$received_protocol is "local" or
$received_protocol is "esmtpa"
) and (
$header_from contains "@citibank.com" or
$header_from contains "@bankofamerica.com" or
$header_from contains "@wamu.com" or
$header_from contains "@ebay.com" or
$header_from contains "@chase.com" or
$header_from contains "@paypal.com" or
$header_from contains "@wellsfargo.com" or
$header_from contains "@bankunited.com" or
$header_from contains "@bankerstrust.com" or
$header_from contains "@bankfirst.com" or
$header_from contains "@capitalone.com" or
$header_from contains "@citizensbank.com" or
$header_from contains "@jpmorgan.com" or
$header_from contains "@wachovia.com" or
$header_from contains "@bankone.com" or
$header_from contains "@suntrust.com" or
$header_from contains "@amazon.com" or
$header_from contains "@banksecurity.com" or
$header_from contains "@visa.com" or
$header_from contains "@mastercard.com" or
$header_from contains "@mbna.com"
)
then
logwrite "$tod_log $message_id from $sender_address is fraud"
seen finish
endif

## OTHER FAKE SENDERS SPAM
## Enable this to prevent users using @domain from addresses
## Not recommended since users do use from addresses not on the server
## Log all outgoing mail from server that matches rules
logfile /var/log/filter.log 0644
if (
$received_protocol is "local" or
$received_protocol is "esmtpa"
) and (
$header_from contains "@hotmail.com" or
$header_from contains "@yahoo.com" or
$header_from contains "@aol.com"


)
then
logwrite "$tod_log $message_id from $sender_address is forged fake"
seen finish
endif



## KNOWN FAKE PHISHING
### Log all outgoing mail from server that matches rules
logfile /var/log/filter.log 0644
if (
$received_protocol is "local" or
$received_protocol is "esmtpa"
) and (
#Paypal
$message_body: contains "Dear valued PayPal member" or
$message_body: contains "Dear valued PayPal customer" or
$message_body: contains "Dear Paypal" or
$message_body: contains "The PayPal Team" or
$message_body: contains "Dear Paypal Customer" or
$message_body: contains "Paypal Account Review Department" or


#Ebay
$message_body: contains "Dear eBay member" or
$message_body: contains "Dear eBay User" or
$message_body: contains "The eBay team" or
$message_body: contains "Dear eBay Community Member" or


#Banks
$message_body: contains "Dear Charter One Customer" or
$message_body: contains "Dear wamu.com customer" or
$message_body: contains "Dear valued Citizens Bank member" or
$message_body: contains "Dear Visa" or
$message_body: contains "Dear Citibank" or
$message_body: contains "Citibank Email" or
$message_body: contains "Dear customer of Chase Bank" or
$message_body: contains "Dear Bank of America customer" or


#ISPs
$message_body: contains "Dear AOL Member" or
$message_body: contains "Dear AOL Customer"


)
then
logwrite "$tod_log $message_id from $sender_address is phishing"
seen finish
endif

# END
# All outgoing mail on the server only - what is sent out

-------------------------------

Bineinteles, puteti adauga si voi mai multe filtre.
Sistemul chiar merge. Am testat, trimitind de pe alta adresa un mesaj cu niste oferte de "viagra" si nu am primit nici un mesaj, a fost automat sters.

Sper sa va fie de ajutor.