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docs: Mailcow deliverability — 10/10 mail-tester score achieved

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PTR record set by Breezehost: 38.68.14.188 → mail.firefrostgaming.com
DMARC rua tag added (postmaster@firefrostgaming.com)
All checks passing: SPF, DKIM, DMARC, PTR, blacklists clean
Perfect score achieved March 16, 2026
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Claude
2026-03-17 00:11:08 +00:00
parent 7efcc4b984
commit a289e2041e
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docs/tasks/mailcow-email-server-on-nc1/deployment-plan.md
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@@ -233,6 +233,14 @@ If the old invite expired, delete it and create a new one for `unicorn20089@fire
2. Send an email to the address shown
3. Check your score (aim for 9+/10)
**✅ RESULT (March 16, 2026): 10/10 — PERFECT SCORE**
- SPF: ✅ Pass
- DKIM: ✅ Valid
- DMARC: ✅ Pass (p=quarantine, rua added)
- PTR/rDNS: ✅ 38.68.14.188 → mail.firefrostgaming.com (set by Breezehost)
- Blacklists: ✅ Clean
- SpamAssassin: ✅ Pass
### Test with Gmail
- Send test email to a Gmail account
- Check if it lands in inbox (not spam)