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Top 8 Shell Blacklist Projects
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postwhite
Script for generating a whitelist for Postfix's Postscreen based on large senders' SPF records
I've been self-hosting my eamil for over 10 years now. I have fallen back to using Amazon's SES to send because all of Digital Ocean's IP blocks suddenly got marked as bad and I don't have enough volume to improve a new IP reputation - https://news.ycombinator.com/item?id=39891262, https://news.ycombinator.com/item?id=38471262
I use Gmail as a free spam harvester to train my own spam filter - https://news.ycombinator.com/item?id=38843288.
But as others here have suggested greylisting is extremely helpful in this space as legitimate servers should always retry. Well only my power company is the exception and they will fall back to sending paper bills, but even Gmail falls foul for them. - https://news.ycombinator.com/item?id=38512732
On greylisting I would say using https://github.com/stevejenkins/postwhite (even if it's very old and not actively maintained) has proven very important for the annoying 2FA emails, I strongly contend that email isn't suitable for this use case but that's another conversation)
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Shell Blacklist discussion
Shell Blacklist related posts
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Self-Hosting Email Like It's 1984
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السماح بالمواقع السيئة
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I'm rather happy with these stats (20% DNSSEC, GAFAM in the mid teens)
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Inbound email spam. What are my options?
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Do you use blacklists / IP threat intelligence and are they helpful?
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I Caved and switched to Amazon SES to send my emails
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Security tips for self hosting email?
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A note from our sponsor - SaaSHub
www.saashub.com | 12 Jun 2026
Index
What are some of the best open-source Blacklist projects in Shell? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | youTube_ads_4_pi-hole | 2,582 |
| 2 | adblock-lean | 539 |
| 3 | IPSet_ASUS | 422 |
| 4 | blackweb | 393 |
| 5 | black-mirror | 217 |
| 6 | ipset-country | 95 |
| 7 | postwhite | 94 |
| 8 | isfree | 16 |
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