Rspamd
An open-source spam and phishing filtering engine for mail servers.
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About Rspamd
Rspamd is a filtering system that runs alongside a mail server to stop spam, phishing and malicious attachments. It combines DNS blocklists, IP and URL reputation, greylisting and rate limiting with SPF, DKIM, DMARC and ARC checks, content rules and machine learning.
Written in C with an asynchronous core, it scales from a single personal mail server to large hosting providers. The detection core is open source, with premium plans and support available for organisations that want them.
Strengths
- Fast asynchronous C core
- SPF, DKIM, DMARC and ARC validation
- Flexible rules on headers, URLs and body text
- Scales from one server to large providers
Limitations
- Requires running and configuring your own mail server
- Tuning rules takes time and mail knowledge
Details
- Pricing
- FreemiumOpen-source core is free; premium plans with support and SLAs are paid.
- License
- Open source, license not stated
- Developer
- The Rspamd contributors
- Platforms
- Self-hosted
- How it runs
- Self-hosted
- Account
- Not required
- Best suited for
- Admins running their own mail server who need spam filtering
- Categories
- Security tools
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
Similar software
Related functionality, not necessarily a direct replacement.
ClamAV
An open source antivirus engine, used mostly for scanning mail servers and file shares rather than desktops.
CheckTLS
A web tool that tests whether a recipient's mail server accepts secure TLS connections for email.
Postmark DMARC Digests
Free service that turns a domain's DMARC reports into readable weekly email summaries.
PhishTank
Community-run phishing URL database where you can check, submit and verify suspected phishing sites.
