ISP Email blocking
As Spam has become more and more of a problem, ISP's have adopted a number of programs to help them stem the tide. In their zeal to block Spam, it is currently estimated that 17% of all mail classified as Spam and being blocked is, in fact non-Spam being sent by legitimate marketers to their clients and prospects. These improperly blocked messages are called false positives. From the sender’s perspective, there are three basic protocols/tools being used by the ISP's to accomplish the blocking:

Filtering - Generally a set of rules designed to suppress or bounce any email containing excluded data.

Static Blocking - Use of internal and external white and black lists consisting of IP addresses to pass (good guys) or block (bad guys) email.

Dynamic Blocking - Dynamic monitoring of an incoming email stream and resulting bounces, watching for excessive numbers of bad addresses (from compiled Spam lists), and screening for the ability of the sender to receive the resulting bounces.

AcquireWeb Protections
As an Email Service Provider (ESP), AcquireWeb maintains close contact with the email industry through memberships in numerous organizations concerned with fighting Spam and promoting email privacy. As such, we employ a number of tools and procedures to assure compliance with ISP white list requirements and delivery of email:

Filtering - We provide our clients with best practice consulting to help avoid the use of words and phrases that would trigger a filter block.

Static Blocking - We stay in constant communication with all major ISP's to assure continued white listing of AcquireWeb IP addresses.

Dynamic Blocking - We maintain the highest quality standards for our 250 MM match file using internally developed technology for e-data hygiene and bounce detection.

August 20, 2003

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