forwardemail / forwardemail/forwardemail.net

[feat] Denylist, add CIDR range block and ASN block

Open
#582 0 comments 0 reactions 0 assignees View on GitHub
enhancement
Dominant language
JavaScript
Stars
1.7k
Forks
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PR merge metrics
No merged PRs in 30d

Description

I think it could be good to add possibility of blocking CIDR ip ranges and, if possible, entire ASN.

For example, i see many spam msgs arrive now from:
AS25693
Virtual Machine Solutions, LLC
-no reverse hostname
-always different IPs
*Not blocked by FWD

AS36352
Hostwinds Seattle
*currently blacklisted by FWD as gta5menuclub.com hostname.

Contributor guide

Open the contributing guide

Research direction

Start by locating the existing denylist and FWD hostname-blocking entry point. Determine how CIDR ranges and ASN data should be represented and matched, then define completion around reliably blocking messages from configured ranges and ASNs without affecting unrelated senders.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
backend, security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
35/100

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