Monday, July 21, 2008

Exchange e-mail attachment blocking in SBS 2003 (book excerpt, chapter 5)

Good Monday to you!
Each day, I am posting up a few pages from my Windows Small Buisness Server 2003 Best PRactices book until SBS 2008 ships. Today we look at the native e-mail attachment blocking in Microsoft Exchange Server 2003 in SBS 2003 and also discuss content filtering....this is actually one ofthe really cool features in SBS 2003 (the atachement blocking capability).
Anyways - enjoy the read and the ride....harrybbbb
Harry Brelsford, ceo at SMB Nation,
Blocking Attachments, E-mails, and Content
There are some interesting capabilities that you might not know about in Exchange in SBS 2003 relating to attachment and domain blocking. Content filtering is another matter I’ll close this section with.
BEST PRACTICE: CRN reported in “Rivals Face Challenge As Microsoft Extends Its Antispam Technology” (http://crn.channelsuper­ that Microsoft will offer stronger anti-spam technology in Exchange Server 2003 in the first half of 2004. No other details available at press time but monitor Microsoft’s Exchange and TechNet sites for updated information. CRN at should be monitored as well.
Attachment Blocking
You likely recall the Remove E-mail Attachments page (Figure 4-14) in the EICW from Chapter 4. The function it performs is relatively straightforward: remove e-mail attachments of a certain type. But a question that continually arose during the fall 2003 hands-on labs for SBS 2003 concerned where this setting was being made in the background. Students asked if they could see where the EICW was setting this.
So I researched this by consulting with the Microsoft SBS program manager who owns this functionality and found that:
• An SMTP “sink” is trapping the attachments and handling them according to the rule you set on the Remove E-Mail Attachments page.
• There is no user interface (UI) to “see” where these settings are made or where this activity is occurring (other than the outcome, such as the attachment being removed or saved to a folder).

And don’t forget that we have Outlook 2003 as a backstop to also block common attachments in e-mail. This is covered later in the Outlook 2003 section of this chapter.
Visit for the latest updates for any Microsoft product.
Junk E-mail Blocking
Another popular question is what native ability Exchange has to block offensive e-mail domains as a poor man’s form of spam blocking (that is, using it instead of purchasing a third-party spam blocking tool). This is most easily accomplished by select and configure the Connection Filtering and Sender Filter tabs on the Message Deliver Properties dialog box that you see in Figure 6-6 (right-click Message Delivery and select Properties under Global Settings in the Exchange System Manager under Advanced Management in the Server Management console).
Figure 6-6
Get to know the Message Delivery Properties sheet if you want to engage in basic e-mail blocking inside of Exchange.
This e-mail blocking can also be accomplished painfully by creating an Active Directory contact object that has the offending e-mail name (such as and then adding it via the Delivery Restrictions tab (click the Add button beneath Reject messages from) on the Small Business SMTP connector Properties screen.
BEST PRACTICE: Of course, I saved perhaps the best junk e-mail blocking discussion for last. Near the end of the fall 2003 SBS 2003 hands-on lab tour in the US, a few students, already having worked with SBS 2003 at that point, waxed poetically about the effectiveness of the Outlook 2003 spam blocking capability. The consensus was it just works. A Microsoft employee echoed the same sentiment as “your Microsoft Research division dollars at work.” Couldn’t have put it better myself!
Content Filtering
Now for the bad news. Content filtering-as many of us know it in third-party spam filters that eliminate offensive e-mails selling Viagra and Vicodin-is not natively available in Exchange (but should be around mid-2004 as per the Best Practice earlier). Don’t be confused because some might think that the Content Restrictions tab on the Small Business SMTP connector Properties screen (Figure 6-6 above) is really performing a filtering function. It is not. It is allowing
e-mail of different priorities, etc. Note that I’ll cover spam blocking in it various forms (attachment blocking, e-mail and domain blocking, and content filtering) more in Chapter 11. You’ll recall that I briefly mentioned spam in Chapter 5. Stand by!


Outlook Support said...

Microsoft unveils details about the upcoming Windows Small Business Server 2008 and introduces the Windows Essential Server Solutions family of products.Thanks for sharing information.....

Anonymous said...

[url=]buy mexitil online in usa[/url]

Anonymous said...

Can anyone recommend the top RMM system for a small IT service company like mine? Does anyone use or How do they compare to these guys I found recently: N-able N-central network manager
? What is your best take in cost vs performance among those three? I need a good advice please... Thanks in advance!

Anonymous said...

When it comes time to prepare your property for your initial open house event, make sure to view it from the point of view of a possible buyer. Be certain that the entire residence is tidy and that it feels inviting. Turn on all the lights in the house to be certain that every room feels appealing and cozy. Where you can, do some staging. This can include putting some books out on a end table, or arranging a vase of fresh flowers on the [url=]hand fans[/url] dinette table. Lots of real estate agents event make some baked goods or oven-baked bread to give the real estate property a [url=]custom hand fans[/url] relaxed and appealing ambiance.

Alex said...

I have got only some variants for resolving such problem and of theirs it is the next utility. Which relieved me some time ago and owns many positive characteristics for working out almost all kinds of troubles - fix outlook problem microsoft exchange.

Anonymous said...

facebook likes
1000 facebook likes
buy facebook likes facebook likes buy facebook likes
i have a problem with my internal HDD. When this all happened, i was playing a game online. I got a Virus Worm and i shut down my computer and reformatted my HDD and put windows back on. I had a secondary HDD in for back-up purposes. so got windows in and put everything back, but i then noticed that my computers performance went down drastically with my main HDD, I could not copy anything i had onto the back-up drive and once i did it was so slow to copy the file. Once i had all the files on the back-up drive, i decided to start from the back-up drive with windows. Same applied. It was really slow with the reading-and-writing. i decided to take the secondary back-up drive out and boot from the main HDD. Everything seemed to be running smoothly i checked the main HDD Temperature with HD tune. The drives temp was 37 degrees Celsius, and the drive went to normal temperature of 43-44 degrees Celsius. I then decided to plug in the secondary HDD and leave it on for a day. the temperature went from 43-44 degrees to 47-48 degrees Celsius. So my guess is that the HDD drives are getting way to hot, and i am getting what seems like bad sectors in the drive, but it has never done this before. I have always had my back-up drive in ever since i got my main HDD. I can't place my finger on what is wrong with my drives. Once the main HDD is lower temperatures the drive seems to be performing better. but its normal temperature is 43-44 degrees Celsius and i still have some problems with reading and writing then. Can someone tell me what has happened please. I dont know if it was from the worm virus or if the temperatures are getting too hot (but has never done this before) can someone tell me what to do. I have changed the line leading into the motherboard as well, and that seems to have no effect. i even swapped the board lines between the CD drives and the HDD drives, no effect on that either. can someone tell me what is going on, i have ran out of options.

facebook likes buy facebook likes [url=]buy facebook likes [/url] 1000 facebook likes

Anonymous said...

It's remarkable to pay a visit this website and reading the views of all mates about this piece of writing, while I am also keen of getting know-how.
Here is my page :: Discount Coupons

Anonymous said...

Time pieces can easily be bought on the internet or in person.
It is possible that you could think you're buying a genuine article and end up with a fake. For example, the Tank Francaise Series is a historical collection by itself.

Feel free to surf to my webpage - casio watches

Anonymous said...

Without proper attention and cleaning, these materials will loss their luster and can even lead
to deterioration and damage. Are you looking for your best way to
help your visitors see the high quality from the jewelry pieces which you have on offer.
Jewelry cases, boxes, stand and so forth present the jewelry in
the best possible circumstances under quality lighting.