MostlyGeek

We’re on the last hour of our 24 hour layover here in Korea. There are a few things that I will always remember about my short stay in Korea.

Starcraft TV rules. I’m serious, there is a channel that was airing around the clock Starcraft 1 on 1 matches. In North America we have professional poker. [...]

I’ve completely lost track of what time it is. I’m writing this in the business center of the tranfer hotel in the Incheon Airport in South Korea. It has been a long, I don’t know, 16 hours. I feel like I haven’t slept in about 2 days (I haven’t). Our morning started out by waiting [...]

Tonight I did some analysis on the effectiveness of PTR blocking and the results are interesting. I exported the spam messages blocked in the past 24 hours by our Barracuda and did an analysis of the most effective PTR blocking regular expressions. I wrote about PTR filtering here and this is follow up to how [...]

With the increase of blocking of spam from dynamic hosts, this is for the FreeBSD users who need to relay all email through their ISP.

Go to /etc/mail
Edit `hostname`.mc
Uncomment the: define(`SMART_HOST’, `your.isp.mail.server’) line
Replace `your.isp.mail.server’ with the correct value
sudo make install
sudo sh /etc/rc.sendmail restart
done!

To test this:

mail youremail@address.com
tail /var/log/maillog
you should see something like… Feb 6 15:51:38 www2 [...]