LYLIX Knowledgebase

DKIM key rotation playbook — rolling keys without breaking inbound mail

DKIM keys should be rotated periodically — annually at least, quarterly if you're being thorough. The trick…

Getting delisted from Spamhaus, UCEProtect, Barracuda — the realistic process

Your IP ended up on a blocklist. The procedure to get off varies by list, but the meta-process is consistent: fix…

Mailcow on a LYLIX VPS — sizing, install, the post-install hardening pass

Mailcow is the easiest way to run a complete production mail stack on a single VPS — Postfix + Dovecot +…

Postfix + Dovecot from scratch — production-grade mail on a LYLIX VPS

Running your own mail server is harder than it was in 2005 but it's still very doable. This article walks the full…

Reading DMARC reports without losing your mind — the XML, the patterns, the action items

If you publish a DMARC record with a rua tag, receiving mail providers send you XML reports daily. Most people look…

Sender reputation for a brand-new VPS IP — the warm-up strategy that actually works

A new VPS IP starts with no sender reputation. Whether the mail you send is delivered, spam-foldered, or rejected…

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