Unless, that is, you run afoul of the Spamhaus block list (SBL).
What does SBL stand for?
SBL stands for Spamhaus Block List
This definition appears frequently and is found in the following Acronym Finder categories:
- Information technology (IT) and computers
- Organizations, NGOs, schools, universities, etc.
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We have 341 other meanings of SBL in our Acronym Attic
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Samples in periodicals archive:
The Spamhaus Block List (SBL) is a free real time DNS-based database of IP addresses of verified spammers, spare gangs and spare services.