Deploy Poste.io on Nexent Cloud

About Poste.io

Poste.io: SMTP, IMAP and POP3 with spam and virus filtering, DKIM/SPF/DMARC, Sieve rules, Roundcube webmail and a web admin panel for domains, mailboxes and aliases, all in one container. Mailboxes and settings live on a persistent volume. Note: the platform does not yet expose the mail ports (25, 465, 587, 993), so at the moment only the web interface is reachable from outside - see the notes before deploying.

What you get

• Admin account created for you — The first visit opens the setup page where you create the administrator and the first mail domain
• Everything in one container — SMTP, IMAP/POP3, spam filtering, webmail and the admin panel - nothing else to set up
• Persistent mailboxes — Mail, accounts and DKIM keys live on a dedicated volume that survives redeploys; grow it from Settings > Storage

Storage that survives a restart

Poste.io is deployed with a persistent volume. They keep their contents across restarts, redeploys and resource changes, and can be resized later.

• poste_data — 20 GB — Mailboxes, accounts, DKIM keys and configuration

How deployment works

1. Click Deploy Poste.io and sign in to your Nexent Cloud workspace (or create one - it takes a minute).
2. Name the app and adjust CPU, memory and storage if the defaults don't fit; the price updates as you go.
3. Nexent provisions the containers, their persistent volumes and a *.nexentcloud.com address with TLS. Add your own domain afterwards from the app's settings.

Good to know

• First visit opens the setup page: create the administrator account and your first mail domain there.
• The mail ports (25 for receiving, 465/587 for sending from clients, 993/995 for reading) are not exposed by the platform yet, so right now other mail servers and mail apps like Outlook or Thunderbird cannot reach this server - only the admin panel and webmail work from outside. Do not point a domain's MX record at it until that changes.
• Turn off "Redirect to HTTPS" in the admin panel if you re-enable it: HTTPS is terminated by the platform, and a redirect inside the container loops.
• ClamAV (virus scanning) is off by default because it needs about 1 GB of RAM on its own; set DISABLE_CLAMAV to FALSE under Settings > Environment and raise the memory allocation to turn it on.

Questions about Poste.io hosting