I'm still not clear on exactly what you are trying to do, but in order
to test anything against previous messages, you will need a custom SA
plugin and some sort of database to store the information about previous
emails. That is beyond my area of expertise.
If you just need a regex to match something, I'd be happy to help, but I
would need a more explicit description of what you are trying to match.
Bowie
On 9/28/2016 9:29 AM, Nicola Piazzi wrote:
Bowie, your ia a manual way, it works but is not automated
Automation is a plugin that check similar words in oldest messages
(for example 3 of 4 words match)
Then plugin check if sender domain is different and recipient is different
*Da:*Bowie Bailey [mailto:bowie_bai...@buc.com]
*Inviato:* mercoledì 28 settembre 2016 15:26
*A:* users@spamassassin.apache.org
*Oggetto:* Re: regular expression needed
On 9/28/2016 9:02 AM, Nicola Piazzi wrote:
Usually we receive spam having subjects like these examples in
order of time :
Subject From To
FedEx Shipment 702193383647 Notification j...@company1.com
<mailto:j...@company1.com> s...@mycompany.it <mailto:s...@mycompany.it>
FedEx Shipment 722566383641 Notification a...@other.com
<mailto:a...@other.com> a...@mycompany.it <mailto:a...@mycompany.it>
FedEx Shipment 734563383644 Notification i...@company1.com
<mailto:i...@company1.com> lo...@mycompany.it
<mailto:lo...@mycompany.it>
A package for you jim b...@cocacola.com <mailto:b...@cocacola.com>
j...@mycompany.it <mailto:j...@mycompany.it>
A package for you sue j...@buster.com <mailto:j...@buster.com>
s...@mycompany.it <mailto:s...@mycompany.it>
These come from viruses that infect different pcs in the word that
send same spam
I want to write a plugin that test each email giving penality to
these mails
Detection routine
A mail arrive
Subject is : FedEx Shipment 702193383647 Notification
I search in maillog table for a regex that MATCH FedEx Shipment
702193383647 Notification ALSO IN FedEx Shipment 722566383641
Notification AND IN FedEx Shipment 734563383644 Notification
If it match I verify that FROM DOMAIN IS DIFFERENT
And then I verify that TO ADDRESS IS DIFFERENT
Now I need a regex sintax to put all extracted words of PHRASE
FedEx Shipment 734563383644 Notification and match if it found at
least 3 of 4 words
Someone can help ?
I don't follow exactly what you are trying to do in the description
above, but for that problem, I would start with something like this:
header __FEDEX_ADDR From:addr /\@fedex\.com/
header __FEDEX_SUBJ Subject /FedEx Shipment/
meta FEDEX_SPAM __FEDEX_SUBJ && ! __FEDEX_ADDR
score FEDEX_SPAM 2.0
(Off the top of my head and completely untested. Adjust score as
required.)
This will hit any email with "FedEx Shipment" in the subject that
doesn't come from fedex.com. Note that it will also hit on any
legitimate FedEx emails that have been forwarded. You could minimize
this by constraining the subject match to be at the beginning of the
line (/^Fedex Shipment/). This may or may not have an effect on spam
detection. You could also do a test for non-FedEx urls in the body
rather than looking at the sender.
You could use a simple subject line test for the "A package for you"
emails, unless you know of a valid delivery service that uses that phrase.
--
Bowie
