Category Archives: ExchangeDefender

Throttling Session Concurrency with SBS / Exchange 2003

Exchange, ExchangeDefender, Vladville
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I have really slacked off when it comes to my Technical Articles but I have to say that last two weeks of direct involvement with ExchangeDefender and fighting spammers has really reinvigorated my passion for helping people deal with this scum. … Continue reading

Friends on Rough Days

ExchangeDefender, Friends
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Today was a rough day. Even though the trouble lasted only about 40 minutes and affected just a handful of people its yet another smack in the face of the perfection that we strive for. Bah. I was out having … Continue reading

Changing Face of SPAM Filtering

ExchangeDefender
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August was a hard month for ExchangeDefender with a lot of long planned changes being moved up the timeline to address what I believe will be the end of unmanaged mail servers. Allow me to explain. Assuming you can deal with … Continue reading

SPAM Hoover: BBB Trojan

ExchangeDefender
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So here is what we’re fighting with today, Better Business Bureau fraud/trojan SPAM: Complaint Case Number: C465B4Complaint Made by Consumer Mrs. Marcia E. WorthingtonComplaint Registered Against: Elizabeth MeHaffey of TIMCO Aviation Services, Inc.Date: 05/14/2007/ Instructions on how to resolve this … Continue reading

Huge SPAM / DDoS-like Explosion

ExchangeDefender
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If you’re not so fortunate to have ExchangeDefender protecting your mail server you may have noticed your mail server is slowly choking in the junk that seems not only to be dumping massive amounts of data off but also significantly … Continue reading

ExchangeDefender v3.1 sneak peak

ExchangeDefender
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Ironically enough, this blog gets more traffic than our corporate web site so I’m very happy to share with you another great accomplishment: ExchangeDefender v3.1. Why happy? Because I feel this release pretty much crushes all of our competition in … Continue reading

More about Microsoft PAL’s

ExchangeDefender, Vladville
2 Comments

Now if the unofficial live announcement from WWPC and the VladCast #9 didn’t answer your questions here is the official (as in, “you can take that to the bank and tell them Ligman sent you”) hint on just who the PALs are, where … Continue reading

The Joy of SPAM

ExchangeDefender
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So I’m sitting around this morning finishing up some bugfixes for ExchangeDefender v3.1 and I took a moment to look at yesterdays stats. So far so good for a Monday. Attachment filtering breakdown. Whooa, Microsoft Excel (.xls) in #2 spot? What … Continue reading

Interesting weekend ahead: Big Infrastructure

ExchangeDefender, IT Business, OwnWebNow, System Admin
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Every now and then poor planning and an incredible growth curve meet to make something special. We’re having a special maintenance cycle this weekend at OwnWebNow and rather than to test our luck I’ve extended the maintenance cycle by 5 hours to make sure … Continue reading

Why can’t I email zipped executables like all the worms and viruses do?

ExchangeDefender
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The #1 source of frustration and anger with ExchangeDefender is directly related to the way it handles executable content – with a shotgun. Through the years, we’ve seen executable email content damage so many computers and networks that we outright … Continue reading