At some point you have to write some rules specific to your mail stream. At least I did. Since the spammers always strike first, there's a bit of lag time before they get put on RBLs or rules written and published by others. Spam seems to follow somewhat seasonal patterns. Often in the early fall we'll get slammed with a zillion auto sales spams since dealers are trying to move last year's inventory to make room for next years models. So I had to write some rules for auto-sales. After the campaign dies off, I comment them out if they're not hitting a lot of mail. Of course, you also have to keep your eye on what gets filtered, because you can catch a lot of ham too, if you aren't careful. Sometimes it takes a bit of editing to create a safe and effective rule.
When you install your email server software you can pretty much "walk away" from it w/o too much more management (apart from security upgrades and such). Because spam is by nature dynamic, your antispam software is too - you need to constantly stay on top of your mailstream and tailor it to the spam you're getting today, not the spam you got last week. ...Kevin -- Kevin Miller Network/email Administrator, CBJ MIS Dept. 155 South Seward Street Juneau, Alaska 99801 Phone: (907) 586-0242, Fax: (907) 586-4588 Registered Linux User No: 307357 -----Original Message----- From: Junk [mailto:j...@lexoncom.com] Sent: Monday, December 11, 2017 10:20 AM To: Kevin Miller Cc: users@spamassassin.apache.org Subject: RE: FIlter I wonder in addition to what recomened i could add to increase the score. I am browsing through the archives to learn more but if you think of something quick i could try. Switching to postfix is my next goal but this requires me to rebuild my server as i want to stage the switch and ubuntu server is not happy to have both mta installed at the same time. I a still hitting some spam everyday that scores just below 5. Here are few messages samples. https://ufile.io/k3dzf > There's a number of rulesets that I use - many are mentioned here in > this list and discussed so a look at the archives will probably be helpful. > > KAM - http://www.pccc.com/downloads/SpamAssassin/contrib/KAM.cf > Hashcash > HashBL > SEM - spameatingmonkey.net > > To mention just a few... > > > ...Kevin > -- > Kevin Miller > Network/email Administrator, CBJ MIS Dept. > 155 South Seward Street > Juneau, Alaska 99801 > Phone: (907) 586-0242, Fax: (907) 586-4588 Registered Linux User No: > 307357 > > > -----Original Message----- > From: Junk [mailto:j...@lexoncom.com] > Sent: Friday, December 01, 2017 1:36 PM > To: Kevin Miller > Cc: users@spamassassin.apache.org > Subject: RE: FIlter > > Do you know any additional lists that could be added in addition to: > - built ones > - http://wiki.junkemailfilter.com > - razors > > I have the spam score set to above to be 100% spam as i noticed what > is below 5% sometimes falls into not a spam email. > >
