If you have a reasonably modern (>= 3.1) version of SpamAssassin,you should by default have a MIMEHeader plugin available (at least on Ubuntu). This enables you to create a couple of custom rules that block the more pernicious “open this ZIP file”style trojans.
Put the following in /etc/spamassassin/local.cf:
I’ve been using KVM in production to host Windows Server guests for close to 4 years now. I’ve always been thoroughly impressed at what a great job KVM did with accelerating disk I/O for the guests – making Windows guests perform markedly faster virtualized than they used to on the bare metal. So when I [...]
I never can remember how to get to the latest SIGNED VirtIO drivers for Windows guests under KVM,and it always takes me a surprising amount of time to find them. So,here’s a bookmark for me:
Note:very much fresher drivers than the latest copy I had! Newest drivers there at this time [...]
By default,Postfix (like most mailservers) will keep trying to deliver mail for unconscionably long periods of time –5 days. Most users do NOT expect mail that isn’t getting delivered to just sorta hang out for 5 days before they find out it didn’t go through –the typical scenario is that a mistyped [...]
I just spent bloody forever trying to force any folder created by a Windows user to automatically be 770 instead of 750 on a Samba share (3.6.2 on Ubuntu).
The issue at hand is,with force directory mode = 0770 if a user creates a folder DIRECTLY on the Samba share,all is well…but [...]
Well,I finally got Spice working with KVM in Ubuntu 12.04.1 LTS today. It…was not pleasant. But it can be done (and without any PPAs,with some ugly hackery).
THESE STEPS ARE NECESSARY AS OF OCTOBER 2012. THEY MAY NOT BE BY THE TIME YOU READ THIS. IF YOU’RE FROM THE FUTURE,DO NOT [...]
Tonight I needed to upgrade a customer’s Macbook. She had a 160GB HDD,and wanted to upgrade to a 500GB HDD. No problem,right? Slap the old drive and the new one into an Ubuntu Linux workstation,dd if=/dev/sdc bs=4M conv=sync,noerror | pv -s 160G | dd of=/dev/sdd bs=4M and,45 minutes or so later,[...]
Today’s Apache 101 presentation at IT-Ology went well –20-something attendees,and plenty of questions asked and answered. If you couldn’t make the presentation today –or if you did,but you want to refer to the slides later –you can find my slide deck at http://jrs-s.net/apache101/.
ctimes have got to be one of the most widely misunderstood features of POSIX filesystems. It’s very intuitive –and very wrong –to believe that just as mtime is the time the file was last modified and atime is the time the file was last accessed,ctime must be the time the file was [...]
I had a great time at SELF in Charlotte,NC this weekend. One of the highlights,for me,was for the first time meeting some fellow BSD types in the flesh –Kris Moore (founder of the PC-BSD distribution) and Dru Lavigne (Director of the FreeBSD Foundation),no less. While discussing the pain of doing [...]