When I send e-mail to certain recipients I receive an error message saying that I am being blocked or black listed. Why?
In their attempt to limit SPAM or UCE (Unwanted Commercial e-mail) many e-mail administrators subscribe to “remote black lists” (RBLs). These are lists of addresses from which it is suspected that SPAM or UCE is being sent. There are many way to get listed on one of these lists and it is sometimes difficult to get removed. If you or someone in your office has had a virus which sent out large volumes of e-mail you can often be listed. Unfortunately many of these lists are overly zealous in labeling a site as an offender. Some lists accept nominations from recipients that report sites they believe are sending SPAM or UCE. Some of these lists will group sites by the block of IP addresses that the server may be located in. This means that someone else in that block of addresses could have been responsible for the listing. We do not have a high degree of confidence in these services and prefer to maintain our own black lists which are administrated on a case by case basis.
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