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Newsletter - Issue 23

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SPAM Filters and Blocked Email
We are seeing a surge in SPAM filters blocking emails. This is a normal reaction to the recent surge in computer viruses.
Some companies have reacted by installing a SPAM filter on their company email server/s. While these do work well, they
very often block non-SPAM emails. Everybody is frustrated, from individuals not receiving emails to marketers who can
contact their customers who have opted in to their newsletters. Technicians who maintain the servers are caught in a
delicate balance between keeping the bad email out and letting the good email through.
Basically SPAM filters and firewalls work by scoring each email. The score is comprised of many factors like: HTML, size
(bytes), background images and colors, shouting (all caps and "!"), and dozens of other factors. The higher the score the
greater the chance the email message will get blocked. Each company has its own rules and threshold settings.
Among the bigger triggers are HTML emails of a certain size. Keep your HTML emails small and simple. Make sure images are
linked and not imbedded and do not use IP address (use domain name). If you are using Mail Manager's HTML Editor, your fine.
Also do not send attachments with emails, they are often stripped.
If you think your email is being blocked, try changing the HTML or sending a text message.
You can always use our managed
services. We will work with you to create an HTML template that will score lower.
Please call us for details (800) 940-8009,
email us, or visit our website.
It is also interesting that the reaction of installing and tighening SPAM filters does not generally prevent the virus
emails that are going around as most are text emails with attachments.
Let us end by saying that this is not the end of the world. Over time SPAM filters will get better and administrators will
learn to let the good email through. You may notice a drop in open rates, but not too much and as people use newer email
programs open rates will pick back up.
For more information on spam filters and their effect on business communication,
click here.
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