MailCorner is the Postfix + Dovecot mail service behind 5457090.xyz — running since September 2022. The one-year field report is on the main blog; this site carries the setup parameters and the weekly deliverability probes.
Alerts and notifications for every service here are sent from dedicated addresses on this domain.
LMTP delivery in, an independent outbound queue out — a jam on one side never blocks the other.
Rspamd with locally trained rules; false-positive rate under 0.1% on this mailstream.
Plain IMAP / SMTP with implicit TLS. Any mail app connects; no webmail lockdown.
| Address | Delivers to | Purpose |
|---|---|---|
| alvin@5457090.xyz | primary inbox | personal mail |
| notify@5457090.xyz | primary inbox | service alerts (send-only) |
| archive@5457090.xyz | archive inbox | receipts and credentials, receive-only |
| abuse@5457090.xyz | primary inbox | reports from the outside world |
This service is one of several running on the 5457090.xyz domain. The rest of the fleet:
| Domain | Service | What it does |
|---|---|---|
| www.5457090.xyz | Main blog | Alvin's Notebook — long-form write-ups about this fleet |
| cloud.5457090.xyz | CloudHub | Private file sync and machine backup landing zone |
| cdn.5457090.xyz | StaticHub | Static asset cache for every site on the network |
| api.5457090.xyz | API gateway | Shared JSON API facade for the network's services |
| git.5457090.xyz | GitNest | Self-hosted git hosting, read-only public clones |
| lab.5457090.xyz | Lab Notebook | Weekend experiments with downloadable datasets |
| dev.5457090.xyz | DevTools | Local-first developer tools, nothing leaves the network |