Erwin Craps - IT Helps
Erwin.Craps at ithelps.eu
Thu Feb 14 02:56:25 CST 2008
One of my clients got recently on a ip blacklist due to spam send from a infected computer within the network, probably from end December till last week. Although I personally manage the network all computers had fully updated virus scanners (McAfee) but I Installed Trend Micro halfway Januari so posibly something went wrong migrating from one to another. The Trojan was new and vicious and passed both virus scanners. Cause I don't scan existing files (only write/modify) neither do a weekly scan on desktops the Trojan managed to stay alive on this system... I do not scan cause of user complaint of slow computers... This brings up the discussion of using Blacklists like spamcop to me. I looked into this matter 1 or 2 years ago and read several things about it that Blacklists are not that good against spam and are a in forehand lost fight against spam. Several blacklists where stopping at that moment, so I decided not to use the principle of a blacklist. But, now I got forced in to the matter and noticed ISP are still using blacklists. So I installed a blacklist on this customer server and on my own server for evaluation purposes. I already notices a major decrease in spam in my spam folder (I'm using trend micro to detect spam), but the spam that is not detected by Trend Micro is still getting in my inbox, I don't have the impression that this is lowering, but I only installed it yesterday evening, I have to be patient to see some real result. My question is, what is the opinion and practical experience of the people on this list that manage mailservers? What about false positives? I want to know if I would need to configure blacklist by default on my clients mail servers or not? thx Erwin Craps Zaakvoerder Internetwinkel op http://shop.ithelps.eu http://www.linkedin.com/in/erwincraps <http://www.linkedin.com/in/erwincraps> www.ithelps.be/onsgezin <http://www.ithelps.be/onsgezin> bezoek ook eens de website van mijn zus www.friedacraps.be <http://www.friedacraps.be/> This E-mail is confidential, may be legally privileged, and is for the intended recipient only. Access, disclosure, copying, distribution, or reliance on any of it by anyone else is prohibited and may be a criminal offence. Please delete if obtained in error and E-mail confirmation to the sender. IT Helps - I.T. Help Center * Box Office Belgium & Luxembourg www.ithelps.eu <http://www.ithelps.be/> * www.boxoffice.be <http://www.boxoffice.be/> IT Helps bvba * Mercatorpad 3 * 3000 Leuven IT Helps * Phone: +32 16 296 404 * Fax: +32 16 296 405 E-mail: Info at ithelps.eu <mailto:Info at ithelps.be> Box Office * Fax: +32 16 296 406 * Box Office E-mail: Staff at boxoffice.be <mailto:figures at boxoffice.be>