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Saphira Linux

Mail

Saphira Linux MailDragon

An Open Source, shell-based mail server for Saphira Linux. No dashboard, no SaaS, no per-mailbox billing — a complete mail system you own and control, free forever.

In testing, functionality present — helpers missing
Saphira Linux mailDragon, the Open Source mail server mascot

Filtering and antivirus

Rspamd handles spam scoring, DKIM signing, DMARC evaluation and policy. ClamAV scans mail for viruses. Together they keep the mailbox useful without a heavy-handed, proprietary filter appliance.

NoteFiltering is policy you can inspect and adjust. There is no opaque cloud console deciding what your users receive.

Standards supported

  • SPF — publish which hosts may send for your domain.
  • DKIM — cryptographically sign mail; key management is included.
  • DMARC — domain-based alignment and reporting.
  • BIMI — brand indicators for message identification.
  • TLS — encrypted transport with automated certificate rotation.

Deliverability

Correct DNS is what makes your mail land in inboxes. That means valid MX, SPF, DKIM and DMARC records — and, often overlooked, a correct reverse DNS (PTR) record for your mail server's IP address, configured by your hosting provider.

WarningWithout correct reverse DNS, other mail systems may reject your mail even when SPF, DKIM and DMARC are all correct. This is an infrastructure step outside the box, not a MailDragon limitation — and the included checks make it routine to verify.