You are probably backing up your data—but how and where? Ransomware is on the rise and there are variants that specifically target backups. Read on to discover why off-site is the way to go.
Course Of The Month
1 day, 23 hours left to enrollBecome a Premium Member and unlock a new, free course in leading technologies each month.
Solved
Spamassassin spamd basic configuration
Posted on 2004-08-02
I am running suse openexchange which uses spamassassin spamd version 2.6.3.
spamd is started with the options '-d -c -a -L -u nobody'.
spamassassic configuration file contains :-
# rewrite the Subject: line with ****SPAM**** .* if set to 1 (default=1)
rewrite_subject 0
# report briefly, recommended for report_header==1 (default=0)
use_terse_report 1
Currently spamassassin is only detecting about 30% of spam which is quite poor.
Openexchange does have some strange defaults in some places and I am questioning the use of the '-L' parameter which disables network based checks.
I have looked in /usr/share/smapassassin at the 20_dnsbl_tests.cf and 50_scores.cf files.
1) Spamassassin checks some RBL lists and the -L parameter will effectivly disable this?
2) I would imaging that enabling these checks will make quite a significant difference?
We have an 1024/256 ADSL line and get approx 1500 emails a day (just over 1 per minute).
The mail server runs its own DNS with no forwarders defined.
3) Will there be a lot of additional load on the ADSL with these additinal checks which I believe are normally DNS based?
spamd is started with the options '-d -c -a -L -u nobody'.
spamassassic configuration file contains :-
# rewrite the Subject: line with ****SPAM**** .* if set to 1 (default=1)
rewrite_subject 0
# report briefly, recommended for report_header==1 (default=0)
use_terse_report 1
Currently spamassassin is only detecting about 30% of spam which is quite poor.
Openexchange does have some strange defaults in some places and I am questioning the use of the '-L' parameter which disables network based checks.
I have looked in /usr/share/smapassassin at the 20_dnsbl_tests.cf and 50_scores.cf files.
1) Spamassassin checks some RBL lists and the -L parameter will effectivly disable this?
2) I would imaging that enabling these checks will make quite a significant difference?
We have an 1024/256 ADSL line and get approx 1500 emails a day (just over 1 per minute).
The mail server runs its own DNS with no forwarders defined.
3) Will there be a lot of additional load on the ADSL with these additinal checks which I believe are normally DNS based?
[X]
Welcome to Experts Exchange
Add your voice to the tech community where 5M+ people just like you are talking about what matters.
- Help others & share knowledge
- Earn cash & points
- Learn & ask questions
-
2
3 Comments
1) not too sure, but it might be that amavisd-new is supposed to do some RBL lookups, in which case it'd be slightly "wasteful" to do them again in spamassassin.
2) Not necessarily... It ups the chance that spam will be detected, yes... But for me the real "clincher" has been the addition of DCC, Pyzor and Razor in addition to spamassassin (and some whitelisting:-)... Not sure how to enable these for amavisd-new though.
3) Well, extra RBL checks would (as you assume) mean some added load... But not that much really. Razor, Pyzor and DCC are even less, so these I'd really recommend... Let's see if I can find some links... http://razor.sf.net is Razor, http://pyzor.sf.net is Pyzor and http://www.rhyolite.com/anti-spam/dcc/ is DCC...
-- Glenn
2) Not necessarily... It ups the chance that spam will be detected, yes... But for me the real "clincher" has been the addition of DCC, Pyzor and Razor in addition to spamassassin (and some whitelisting:-)... Not sure how to enable these for amavisd-new though.
3) Well, extra RBL checks would (as you assume) mean some added load... But not that much really. Razor, Pyzor and DCC are even less, so these I'd really recommend... Let's see if I can find some links... http://razor.sf.net is Razor, http://pyzor.sf.net is Pyzor and http://www.rhyolite.com/anti-spam/dcc/ is DCC...
-- Glenn
Thanks. I have the spam filtering in amavis turned off as I am using the existing postgres configuration to send the emails onto spamd after they have been virus checked.
I'll have a look at Razor, Pyzor and DCC
I'll have a look at Razor, Pyzor and DCC
Gns,
I have another question you should be able to answer.
http://www.experts-exchange.com/Operating_Systems/Linux/Q_21096391.html
Thanks
Gareth
I have another question you should be able to answer.
http://www.experts-exchange.com/Operating_Systems/Linux/Q_21096391.html
Thanks
Gareth
Featured Post
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
The purpose of this article is to demonstrate how we can use conditional statements using Python.
Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
Learn how to get help with Linux/Unix bash shell commands.
Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Get a first impression of how PRTG looks and learn how it works. This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
- Linux
- Windows OS
- Networking
- Paessler
- Network Management
- Network Analysis, Network Operations
Suggested Courses
Course of the Month1 day, 23 hours left to enroll
717 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.