Terry's Computer Tips Newsletter
March 14, 2010
Terry's Computer Tips Newsletter
http://www.terryscomputertips.com
A computer tips newsletter for users of PC's.
Volume 5, Number 40 — Sunday, March 14, 2010
IN THIS ON-LINE ISSUE:
1. Email Bounces from Mailing Lists
2. The Lighter Side of Technology
3. Controlling Incoming spam
4. A Reader Question About VIPRE
5. My Computer Security Software Recommendations
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1. Email Bounces from Mailing Lists
I answered an email on a Yahoo! mailing list the other day. The individual was complaining that they got bounce messages from individuals, to whom they had not mailed, every time they mailed a message to the Yahoo! mailing list.
The real problem was that they really did not understand what Yahoo! was doing with their email.
If you subscribe to any Yahoo! mailing lists, or almost any other kind of mailing list, take a look at the From header in a list message.. You will see that Yahoo does not write the From header as From: Yahoo — they set the From header to show the email address of the person posting the message.
This is the normal practice for mailing lists. Of course, when an email bounces, you can guess what happens... e.g., who gets the bouce messages.
In this case, the person was getting bounces because a couple individuals have problems with their accounts, or they have cancelled those accounts without bothering to unsubscribe from the Yahoo list. Or, their mailserver is refusing emails from Yahoo's mailservers, or...
From one of the messages you quoted below,
> Final-Recipient: RFC822;[email address removed]
> Action: failed
> Status: 4.4.7
> Diagnostic-Code: SMTP; 452 try later
The above gives your key. The "secret" part is that many receiving mailservers will not specifically block an email, but they'll send a message to the sending mailserver to "send it again later."
In some cases, they're implementing a spam-filtering technique called Graylisting — they'll note the email, where it came from, the destination, etc, and then allow the email to process normally when it arrives again. Of course, many spamservers will simply not try again.
In other cases, however, the receiving email server may have a problem (e.g., out of disk space) or may just use this as a method of refusing delivery.
2. The Lighter Side of Technology
This week's Terry's Computer Tips technology cartoon from www.ineedacartoon.com .

I prefer VIPRE!
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3. Controlling Incoming spam
Longtime subscriber and friend Choppy Cusachs wrote about his experiences with spam arriving on his domain...
Hello Terry,
A few years ago I got a site, [domain name removed, let's use " example.com], to use for family information sharing. I never got around to building the site, but I set up three or four addresses there to be forwarded to me at this one.
I put some silly addresses on cards and gave them to people who wanted to be able to contact me, things like Flatulus or Choppy@example.com, as well as the intentionally forwarded ones. Since all mail not specifically to be sent to someone else — my wife has an address, too -- get sent on to me, I started getting all manner of spam sent there.
Currently I get a few hundred spam messages a day, some to or pretending to be from real addresses but many pretending to come from some combination of letters at example.com. I go to webmail and look for the occasional genuine message there by mistake, then delete the rest. Often there are 200 or more at a time, and I do this 3 times a day. We have a router here and our computers are up to date with AVG anti-virus and I run Spybot, etc. from time to time looking for malware.
No legitimate message has ever been sent from my site, though it is easy to change this mail program to put almost any From: address on an outgoing message.
Is there any way you know to clear up this mess without giving up my site? I suspect I'm not alone.
Incidentally the family in Spain has a site, example.org, that is actively used for reunion information.
I've let my Clickers membership expire since it appears that the e-mail conferences can't get through. Don't know if the problem is with the club ISP or with Bellsouth, but I'm sure I'm not the only member to give up. I get to Baton Rouge very rarely these days, and at my age, 76, don't like to have to drive back to St. Tammany Parish late at night. But I miss the club. I'm glad to get your newsletter.
Choppy
Most web hosting companies offer one or more anti-spam programs. These should be smart enough to identify and block soem of the arriving spam.
However, the danger in having the antispam filters automatically delete emails is that they will also have false-positives. That is, they will misclassify legitimate emails as spam. If you let the antispam system automatically delete the spam it finds, you will lose good emails, too.
I prefer to have the antispam filters identify and mark the spam, but to retain it. That way, I can download my emails, filter it to a spam folder so I can check it later.
After all, Murphy's Law of Email says that "The more important an email is, the more likely it is to be misidentified as spam."
On my personal computer, I use the free email classification program PopFile to provide much more extensive antispam services.
You can download PopFile from http://getpopfile.org.
4. A Reader Question about VIPRE
New subscriber Bette Poppe wrote me to ask about VIPRE:
Hi, I read your review on Vipre, I am a home use only computer user, I am thinking about buying this product-- do I need firewall too? I have McAfee and do not like it, it really slows down my computer when scanning and downloading up dates. Are you still using this product or do you think something else would be better. Thank You for your time. PS I am not a real computer savey user.
I wrote back to Bette to tell her that, yes, she needs to be running a software firewall as well as antivirus and antispyware.
I think she'll find VIPRE for VIPRE Premium a lot less of a drag on your system than McAfee.
I've written a number of articles on the importance of using a software firewall, especially one that controls traffic in both directions (outbound as well as inbound).
The following are a couple that address the issue:
5. My Computer Security Software Recommendations
I review my security software recommendations and update them for each weekly newsletter issue, if I think they need to change.
My Philosophy: Many people want to pick their most economical solution and prefer an all-in-one anti-virus, anti-spyware and firewall solution. In concept, that's a great idea. In actual practice, I don' think that this type of package is likely to be the best in all the protection categories you need.
Other people want to pick the best of each type program. I'm one of the these folks.
My choice of software that I am willing to recommend is driven by my search for software for me to use. I only recommend programs that I like and that I use. I will sometimes suggest alternatives to my recommendations, but I clearly note if I no longer use them.
Anti-Virus
I'm often asked about several other popular anti-virus or anti-virus combination packages. Yes, I realize that they are not in my recommendation list. "Enough said..."
From 2003 through mid-2008, my personal choice was ESET's small, fast NOD32 anti-virus program, which offers a FREE 30-day evaluation license. I still consider NOD32 to be one of the best in anti-virus protection — and it continues to get recognition and awards. Unlike some of its competitors, ESET offers multiple-year licenses also, and includes program updates in the multiple-year license.
However, I've changed from my long-time choices NOD32 (antivirus) and Sunbelt's CounterSpy (antispyware) to Sunbelt's new VIPRE Antivirus + Antispyware.
I've found that VIPRE puts even less load on my computer than the speedy combination of NOD32 and CounterSpy. I've also been impressed with the way its "deep scan" has found and eliminated risks that were stored in zip files, which is one of the latest malware email tricks. Sunbelt Software offers multi-year licenses and home site licenses on its software, both of which include program updates as well as signature updates.
My anti-virus and anti-spyware choice for my computers and those of my family's computers is VIPRE Antivirus + Antispyware
I'm often asked for alternatives to the programs that I recommend, especially by people who want to buy one package (a "suite") to do everything.
As a result, I tried a couple security suites in the last few months to pick a suite to recommend. ESET Smart Security 4 is my recommended suite alternative. Smart Security 4 has gotten great ratings and includes antivirus and antispyware, both from their current NOD32 v4 version, and antispam and firewall. I no longer use it and have returned to Sunbelt's VIPRE, but for a suite choice, that's what I would use.
Tech Tip
Many antivirus programs will offer you an anti-virus signature subscription renewal when your subscription renews. I strongly recommend against this option — buy the full program or make sure you get program updates with the subscription renewal. Both NOD32 and VIPRE purchases include both program updates/upgrades AND antivirus signature updates.
Vendors routinely improve the capabilities and speed of the programs, too. If you update only the signatures, you miss any program improvements.
Related articles:
- VIPRE Antivirus + Antispyware Review
- A Look at ESET Smart Security 4
- Anti-Virus Programs and Online Scanners
- Free Online Antivirus Scan
- NOD32 Anti-Virus Review - A Look at NOD32
Firewall Software
While the Windows XP firewall is much better than no firewall at all, but don't count on the Windows XP firewall to meet your needs.
You need a two-way firewall, which the Windows XP firewall is not!. Microsoft woke up and supplied a two-way firewall with Windows Vista. However, Microsoft built in pre-authorization for many programs. Windows 7's firewall is also two-way, and again has pre-cleared many programs to communicate outbound to the Internet — some to go where you want to go, and some to "call home."
The Windows XP firewall does not control outbound communications originating from your computer — and you should want to have control if adware/trojans/spyware or even commercial products want to talk to the Internet. Whether they are calling home or spewing spam, you want to be able to control your computer.
Do you want Windows Media Player to call home every time you play something? It does! Do you use the Search function in Windows Explorer to find things on your hard drive? Did you know that every time you search, Windows Explorer talks to Microsoft?
I didn't know that when I ran ZoneAlarm, but the Sunbelt Personal Firewall flagged that to me, and I can stop it or allow it to happen. Many other programs try to call home when you run them, too.
I recommend my choice for a firewall program, which is Sunbelt Personal Firewall.
You can try the full-featured "paid version" of Sunbelt Personal Firewall free for 30 days — after that, you can register it or, if you're using it on a home non-business computer, you can let it revert to the free, lesser-function license.
Tip: Be sure to read my review of SPF for the settings I recommend.
At this time, the Sunbelt Personal Firewall works with Windows 2000, Windows XP and Windows Vista, in 32-bit versions only. Recently, Sunbelt announced that SPF should be available for 64-bit computers in the first quarter of 2010, including Windows 7 support. I can't wait.
Sunbelt Personal Firewall is regularly $19.95 (with discounts for multiple computers and/or multiple years!) for a non-expiring license for the program and includes one year of their updates subscription. A unlimited Home Site License is $39.95 for a year.
Related articles:
Anti-Spyware / Anti-Adware Software
CounterSpy, from Sunbelt Software, has received many kudos from the computer press for its always-running and periodic full system scans. It has been my personal choice for my PC's and my family's PC's.
Sunbelt's CounterSpy v2.5, both improved CounterSpy's performance against malware and reduced its impact on system resources and responsiveness when its scanning.
Sunbelt continues to release updated program versions — the current version is v3.1 — and there's an even newer version about to be released. Nicely, Sunbelt do NOT install the updated programs automatically. You have to use the Update process in the program, which means that you'll know that something significant has changed.
I changed from my long-time programs NOD32 (antivirus) and CounterSpy (antispyware) to Sunbelt's VIPRE Antivirus + Antispyware.
I've found that VIPRE puts even less load on my computer than the speedy combination of NOD32 and CounterSpy. My computer seems to have much more pep and power than it had previously. I've also been impressed with the way its "deep scan" has found and eliminated risks that were stored in zip files, which is one of the latest malware email tricks.
Related articles:
Anti-spam Software
In today's Internet world, the question is not "if" you will get spam, but "how much will you get?"
I use and recommend POPFile as my first choice for handling spam. POPFile sits on your computer, between your email program and your ISP mailbox, and handles emial as it downloads.
POPFile uses a different approach to handle spam than some other programs do — it does nothing to reduce spam. It is designed as an email classification tool — you train it to recognize spam and any other type of email that you want to classify. These classifications can help you sort your emails into appropriate folders in your email program.
Sunbelt Software, who makes the anti-spyware program CounterSpy (which I use and recommend) and the firewall that I use and recommend (Sunbelt Personal Firewall) also has a well-regarded, award-winning anti-spam program called iHateSpam for Outlook and Outlook Express. Since I don't use Outlook or Outlook Express for email, I haven't tried iHateSpam.
Mailwasher Pro would be my first choice to handle spam before it ever gets into your computer's Inbox. Mailwasher Pro uses on-line Realtime Black Lists mail servers sending spam recently, "training" by you of what you think is spam, and your own "friends" and "blacklist" lists. Note: I found that PopFile generally meets my needs and stopped using Mailwasher Pro, even though PopFile works AFTER the emails have been downloaded. If I used a dialup connection, I would be more interested in Mailwasher Pro.
Mailwasher Pro can even bounce spam messages, as if your email address was not valid, although the usefulness and appropriateness of this is questionable. There is a free version called "Mailwasher," but it omits the functions that I consider critical for this purpose -- such as safely previewing the emails safely before they ever get to your email inbox.
Related articles:
Backup Software
When we think of security software, we usually think of antivirus, firewall, antispyware and antispam software. But, what other kind of software is security software? Backup software, of course.
We need to make backup copies of our important data. That data may be financial, such as your checkbook in Quicken, or your spreadsheet tracking your investmants. Or, it may be personal, non-financial data such as digital family photos.
What if your hard drive won't start one day? What will you lose? What if your computer is stolen (let's ignore, for now, whether you should encrypt data on your hard drive to protect it from others — let's just think about the inconvenience and loss to us!)?
There are two basic types of backups you should do.
You need to regularly back up your individual data files to another computer, to an external hard drive, or even to an online repository (but realize, if you have to rebuild the data on your computer, it may have to be downloaded for days and days). An external hard drive is the best choice if you don't have a home network where you could copy to another computer.
If you have a home network, use Karen's Replicator (free for personal, non-business use) to back up the files that change. I have it scheduled to copy my data files every evening from my notebook to another computer at my home. You should also get an external hard drive (or two, so you can alternate them) and make occasional backup copies to it. Preferably store it at a relative's house or your safe deposit box.
If you don't have a home network, get an external hard drive (or two, so you can alternate them) and make regularly scheduled backup copies to it. Use Karen's Replicator (free for personal, non-business use) to back up the files that change to your external drive. Preferably, store one external drive at a relative's house or your safe deposit box, so that if the worst happens, you haven't lost irreplaceable photos and other information.
The other type of backup is an image backup. This gives the ultimate in quick restore capability. Just plug in the external drive, boot the cdrom, and restore the image back to your hard drive. I use Acronis True Image Home 2010 (they also have discounts for upgrades)to make backups across my network every three days. Once a month, I make a full backup image. Every three days, it makes an incremental backup — copying only those files that have changed.
Acronis True Image Home, as of version 2009, allows you to recover individual files and folders from the image files, so you don't have to restore everything. The nice thing about making my backup across the network is that I can restore individual files across the network from those images. Sometimes that's the easiest thing to do, especially when the brain takes a little nap... <grin>
Why use both Replicator and Acronis True Image Home, if we can restore individual files from both? Replicator will always have the latest version it backed up — but not any earlier ones, and it can be run daily or even hourly without taking up much more drive space (backups are replaced when changed, rather than storing additional copies). With Acronis True Image, we can have multiple versions of the files to choose among. We can restore one that's months old, if we like, not just the latest version.
Cable/DSL Router
If you have a cable modem or a DSL modem, you need to have another layer of inexpensive protection between you and the Internet. A cable/DSL router isolates your computer from direct connection to the Internet. Your computer can easily request your email, web pages, etc. through the router. The responses come back to the router and are smoothly routed to your computer. But, someone on the Internet side of the router can not initiate a connection to your computer — they can only respond to your request.
Even if you only have one computer to connect to your cable or DSL modem, I recommend that you purchase and use a cable/DSL router because of the protection it can give you against attempts to attack through some flaws in Windows itself.
A router isolates your local network, whether it is only one computer or several, from the Internet by actually making it a separate network. The router gets the "public" IP address and handles all your outbound communications and the responses to them. But, it blocks computers on the Internet side from being able to initiate communications with your computer! This will prevent you from falling prey to many worms that try to attack security holes in Windows itself.
For a wireless router, I still recommend the Linksys WRT54G wireless router. Now that the "n" specifications have become final, I'm watching for the routers to be labelled as meeting the final specifications. Too much equipment still is labelled as meeting "Draft n" specifications, including the wireless card options in the new Dell Precision M6500 mobile workstation (notebook) that was released on December 1st! The interoperability issue still concerns me. I want the wireless equipment to work together without compatibility problems between manufacturers.
If you don't want wireless, I recommend the Linksys BEFSR41 wired router, which I also use. Either way, based on my experience, I recommend Linksys routers for price, reliability and Linksys' habit of releasing updated firmware for their products..
Tech Tip
By the way, the new "802.11n" wireless specification was approved in September 2009. It had been expected to be approved in January 2010.
If you're shopping, look for some indication that the model meets the final, approved standard. The "n" routers sold in the last couple years were based on different drafts of the standard.
I'm planning to switch from 802.11g to 802.11n, but not until January or February. I want the router manufacturers to have a chance to get their firmware upgrades done for 802.11n compliance, or to release new models in case they need to.
See these related articles:
Volume 5, Number 40 — Sunday, March 14, 2010
Copyright © 2010 Terry A. Stockdale. All rights reserved.
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