Tag Archives: spam

enom is the source of recent spam campaigns

Intro I’m still watching over spam. The latest trend are spam campaigns which have a few characteristics in common perhaps the most interesting of which is that the domains have all been registered at enom.com. The details Some other things … Continue reading

Posted in Internet Mail, Spam | Tagged , , | 32 Comments

Analysis of a spam campaign and how we managed to fight back for a few days

Intro A long-running spam campaign has been bothering me lately. In this post I analyze it from a sendmail perspective and provide a simple script I wrote which helped me fight back. The details Let’s have a look see at … Continue reading

Posted in Admin, Internet Mail | Tagged , | Leave a comment

The IT Detective Agency: can’t get email from one sender

Intro For this article to make any sense whatsoever you have to understand that I enforce SPF in my mail system, which I described in SPF – not all it’s cracked up to be. The details Well, some domain admins … Continue reading

Posted in Admin, DNS, Internet Mail | Tagged , | Leave a comment

How to Stop Chinese Spam – for Mail Admins, w/ June 2014 update

(Updated 12/19/2011 and 6/2014 with additional character sets) (updated 9/2012 with additional signature) Intro I have been a target for random Chinese language spam in my various email accounts, but the problem has really gotten worse in the past few … Continue reading

Posted in Internet Mail, IT Operational Excellence, Spam | Tagged , , , , , | 14 Comments