Re: Using spamassassin to thwart sharepoint phishing attacks

2021-04-11 Thread Kevin A. McGrail
If you have spamples for sharepoint phishes that evade kam ruleset, shoot me an email off-list to discuss getting me the spamples. On Sun, Apr 11, 2021, 16:43 Steve Dondley wrote: > On 2021-04-11 04:19 PM, Benny Pedersen wrote: > > On 2021-04-11 22:09, Steve Dondley wrote: > > > >> Content analy

Re: KAM_deadweight.cf

2021-04-11 Thread Kevin A. McGrail
The deadweight file also looks at rules in the stock rule set that can be disabled as well. If you have spamassassin stock rules plus the KAM rule set, You should see significantly lower resource usage, faster processing, and equivalent efficacy. If you wanted to create a script to outright delet

Re: Using spamassassin to thwart sharepoint phishing attacks

2021-04-11 Thread Loren Wilton
3.5 BAYES_99 BODY: Bayes spam probability is 99 to 100% [score: 1.] 0.5 BAYES_999 BODY: Bayes spam probability is 99.9 to 100% [score: 1.] I have 5.0 BAYES_99 BODY: Bayes spam probabilit

Re: KAM_deadweight.cf

2021-04-11 Thread Benny Pedersen
On 2021-04-11 23:33, Kevin A. McGrail wrote: We have a system that can assess rules to disable and re-enable. unfair, i have limited ram # rule disabled # rule lines # rule lines # rule enabled rule lines rule lines will reduce ram usage imho no ? On Sun, Apr 11, 2021, 17:13 Benny Peders

Re: Using spamassassin to thwart sharepoint phishing attacks

2021-04-11 Thread Steve Dondley
sorbs dnsbl missing, have you denied sorbs.net results ?, or is spamassassin not testing sorbs.net anymore ? Best I can tell, my SA config should be testing for sorbs. I've got this line in /etc/spamassassin/v3220.pre: loadplugin Mail::SpamAssassin::Plugin::DNSEval And in /usr/share/spama

Re: Using spamassassin to thwart sharepoint phishing attacks

2021-04-11 Thread Steve Dondley
Also, I've heard of sorbs over the years but I'm not sure exactly what it is. Is this the same block list run by Cisco? OK, I was getting SORBS confused with SenderBase Reputation Score (SBRS). That's the one run by Cisco, I believe. I actually have an account on the SORBS website that I s

Re: Using spamassassin to thwart sharepoint phishing attacks

2021-04-11 Thread Steve Dondley
sorbs dnsbl missing, have you denied sorbs.net results ?, or is spamassassin not testing sorbs.net anymore ? How would I check if it's turned on? I tried grepping in /etc/spamassassin on "sorb" (case insensitive) and found nothing. So I guess it's not in my default config. I see many men

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Antony Stone
On Sunday 11 April 2021 at 23:27:26, Benny Pedersen wrote: > On 2021-04-11 23:20, RW wrote: > > > > I don't see the advantage. You might just as well submit to the shared > > server so everyone benefits. > > > > Pyzor is not a realistic substitute for Bayes. > > and centralizion on prolems is j

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread RW
On Sun, 11 Apr 2021 16:57:54 -0400 Steve Dondley wrote: > >> Second, I'm not sure if my tests will work on my spam samples which > >> have the spam encapsulated with the "report_safe" setting set to a > >> value of "1". > > > > I wouldn't expect it to work at all. "report_safe" encapsulation >

Re: KAM_deadweight.cf

2021-04-11 Thread Kevin A. McGrail
We have a system that can assess rules to disable and re-enable. On Sun, Apr 11, 2021, 17:13 Benny Pedersen wrote: > > why so many scored 0 ? > > would it not be better to remove the rule ? >

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Benny Pedersen
On 2021-04-11 23:20, RW wrote: On Sun, 11 Apr 2021 10:04:03 -0400 Steve Dondley wrote: On 2021-04-11 09:34 AM, Benny Pedersen wrote: > On 2021-04-11 15:13, Steve Dondley wrote: > >> What do you think? > > pyzor is usefull if running pyzord localy, design of pyzor was imho > ment to be local pyz

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread RW
On Sun, 11 Apr 2021 10:04:03 -0400 Steve Dondley wrote: > On 2021-04-11 09:34 AM, Benny Pedersen wrote: > > On 2021-04-11 15:13, Steve Dondley wrote: > > > >> What do you think? > > > > pyzor is usefull if running pyzord localy, design of pyzor was imho > > ment to be local pyzord and have t

KAM_deadweight.cf

2021-04-11 Thread Benny Pedersen
why so many scored 0 ? would it not be better to remove the rule ?

Re: Using spamassassin to thwart sharepoint phishing attacks

2021-04-11 Thread Benny Pedersen
On 2021-04-11 22:43, Steve Dondley wrote: On 2021-04-11 04:19 PM, Benny Pedersen wrote: On 2021-04-11 22:09, Steve Dondley wrote: Content analysis details: (4.4 points, 5.0 required) pts rule name description -- ---

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Steve Dondley
Second, I'm not sure if my tests will work on my spam samples which have the spam encapsulated with the "report_safe" setting set to a value of "1". I wouldn't expect it to work at all. "report_safe" encapsulation creates a new email which isn't a spam. From what I read on pyzor's home page

Re: Using spamassassin to thwart sharepoint phishing attacks

2021-04-11 Thread Steve Dondley
On 2021-04-11 04:19 PM, Benny Pedersen wrote: On 2021-04-11 22:09, Steve Dondley wrote: Content analysis details: (4.4 points, 5.0 required) pts rule name description -- -- 3.5 BAYES_99 BO

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread RW
On Sun, 11 Apr 2021 09:13:26 -0400 Steve Dondley wrote: > Second, I'm not sure if my tests will work on my spam samples which > have the spam encapsulated with the "report_safe" setting set to a > value of "1". I wouldn't expect it to work at all. "report_safe" encapsulation creates a new emai

Re: Using spamassassin to thwart sharepoint phishing attacks

2021-04-11 Thread Benny Pedersen
On 2021-04-11 22:09, Steve Dondley wrote: Content analysis details: (4.4 points, 5.0 required) pts rule name description -- -- 3.5 BAYES_99 BODY: Bayes spam probability is 99 to 100%

Using spamassassin to thwart sharepoint phishing attacks

2021-04-11 Thread Steve Dondley
I've received about a dozen phishing attack emails from Microsoft's sharepoint service within the last couple of weeks. Only one of them was identified by SA as spam. After running the emails through sa-learn, they still only score a 4 to 4.5. But I could see that it would be easy for these ema

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Steve Dondley
On 2021-04-11 03:09 PM, Bill Cole wrote: On 11 Apr 2021, at 13:21, Steve Dondley wrote: value of "1". By the way, anyone know of a CLI utility for extracting the original spam email from these files? spamassassin -d < wrappedspam.eml Ah, ok. I was familiar with the -d option but did not kno

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Bill Cole
On 11 Apr 2021, at 13:21, Steve Dondley wrote: value of "1". By the way, anyone know of a CLI utility for extracting the original spam email from these files? spamassassin -d < wrappedspam.eml As documented in the spamassassin-run man page or by running 'spamassassin --help' Here's a ver

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Steve Dondley
value of "1". By the way, anyone know of a CLI utility for extracting the original spam email from these files? Here's a very crude perl script that does the trick: #!/usr/bin/perl use strict; use warnings; my $email; while (<>) { $email .= $_; } my ($boundary) = $email =~ /boundary="(.

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Matus UHLAR - fantomas
On 11.04.21 09:13, Steve Dondley wrote: I just installed pyzor and did a random spot check of about 10 spam emails to try to evaluate it using this command: pyzor check < some_spam Only one message gave me a hit on pyzor. I have pyzor enabled and for sure I have changes pyzor_timeout to 5. l

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Benny Pedersen
On 2021-04-11 16:04, Steve Dondley wrote: Interesting. I wonder if it might be worth it to set up my own pyzor server for my own network of mail servers. That's probably going to be easier than sharing spam/ham samples around between users. yes its more light in sieve scripting to use it this

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Steve Dondley
On 2021-04-11 09:34 AM, Benny Pedersen wrote: On 2021-04-11 15:13, Steve Dondley wrote: What do you think? pyzor is usefull if running pyzord localy, design of pyzor was imho ment to be local pyzord and have the pyzor client query local, but pyzord could be get results from other pyzord serve

Re: Is pyzor recommended by folks on this list?

2021-04-11 Thread Benny Pedersen
On 2021-04-11 15:13, Steve Dondley wrote: What do you think? pyzor is usefull if running pyzord localy, design of pyzor was imho ment to be local pyzord and have the pyzor client query local, but pyzord could be get results from other pyzord server farms, but this have never happended, sadl

Is pyzor recommended by folks on this list?

2021-04-11 Thread Steve Dondley
I just installed pyzor and did a random spot check of about 10 spam emails to try to evaluate it using this command: pyzor check < some_spam Only one message gave me a hit on pyzor. But I take my results with a grain of salt because I may not have pyzor configured optimally. For one, I'm us