docs: fix mail server + drop SSH tunneling

- Remove smtp.anhonesthost.com row from service-hostnames partial — we
  don't operate a single shared SMTP gateway; mail server hostnames are
  per-domain and listed on the WHP Dashboard
- Drop SSH tunneling section from service-hostnames reference (not a
  supported access path)
- Point email-client setup at the Dashboard for the per-domain host
  rather than assuming a 'mail.<yourdomain>' pattern

src/content/docs/whp/reference/service-hostnames.mdx

@@ -1,6 +1,6 @@
 ---
 title: Service hostnames
-description: Quick reference for connecting to MySQL, PostgreSQL, Memcached, Redis, and SMTP from inside your container.
+description: Quick reference for connecting to MySQL, PostgreSQL, Memcached, and Redis from inside your container.
 sidebar:
   order: 1
 ---
@@ -20,7 +20,10 @@ Each service's credentials live in a different section of the WHP panel:
 - **PostgreSQL** → **Databases → PostgreSQL** (if enabled on your plan)
 - **Redis** → **Caching → Redis**
 - **Memcached** — no auth required; the service is isolated per container.
-- **SMTP** — use any mailbox you've created and its password.
+
+## Mail servers
+
+Mail server hostnames are **per-domain**, not a single shared hostname. Find the exact IMAP / POP3 / SMTP hostnames for each domain on the **Dashboard** page in WHP.
 
 ## Connecting from your laptop
 
@@ -29,11 +32,11 @@ Direct external connections to these internal services are not exposed for secur
 - **MySQL** — **phpMyAdmin** in the panel for ad-hoc queries.
 - **PostgreSQL** — **Adminer** in the panel.
 - **Redis / Memcached** — use the **Caching** section's built-in CLI panel.
-- **SSH tunneling** — if your plan includes SSH (see the plan page), you can tunnel from your laptop through your site container to the internal service.
 
 ## Related
 
 - [Create a site](/whp/how-to/create-a-site/)
+- [Create an email account](/whp/how-to/create-an-email-account/)
 
 ## Still stuck?