vps/hosts/mx2.windy.me.md

mx2.windy.me

Item	Value
Role	Mail server (mailcow)
SSH	ssh -4 windy@mx2.windy.me (pubkey; root denied; prefer IPv4 from WSL)
Install path	/opt/mail
Compose project	cow (COMPOSE_PROJECT_NAME=cow)
Compose file	/opt/mail/docker-compose.yml
Config	/opt/mail/mailcow.conf (.env → symlink)
Hostname	MAILCOW_HOSTNAME=mx2.windy.me
TZ	Asia/Shanghai
IPv4	194.163.160.244
IPv6	2a02:c207:2284:8258::1
Docker network	IPV4_NETWORK=172.22.1
UI	https://mx2.windy.me

Ports (host-published)

25, 465, 587 (SMTP), 110/995 (POP), 143/993 (IMAP), 4190 (Sieve), 80/443 (UI)

Domain & mailboxes

• Domain: windy.me (primary on this host)
• MX for windy.me: mx2.windy.me (prio 20), mx.windy.me (prio 30)
• Mailboxes (examples): zhiqiang@windy.me, claw@windy.me, hermes@windy.me
• ACME / Let’s Encrypt enabled (SKIP_LETS_ENCRYPT=n); cert SAN includes mx2, autoconfig, autodiscover
• PTR (v4/v6) → mx2.windy.me

Ops notes

• Manage with: cd /opt/mail && docker compose …
• SKIP_CLAMD=y may still leave clamd running after updates; recreate if you need it truly skipped
• Host has ~8G RAM, no swap; watch memory under load
• Unrelated stopped containers may exist (zc-* monitoring stack) — not part of mailcow

Client access (SMTP / IMAP)

See mailcow-smtp-client.

• Send: mx2.windy.me:587 STARTTLS (or :465 SSL), auth = full email + mailbox password
• IMAP: mx2.windy.me:993 · POP: :995
• Webmail: https://mx2.windy.me

Runbooks

• mailcow-health
• mailcow-update
• mailcow-smtp-client
• Script: ../scripts/check-mx2.sh

Verified

Last checked: 2026-08-01 — ./scripts/check-mx2.sh exit 0 (compose up, watchdog 100%, empty queue, TLS LE OK, SMTP Postcow, A/AAAA/PTR/MX/SPF OK).