Merge pull request #204 from 707Alex707/master

Added instructions for binding to multiple addresses

docs/firststeps-ip_bindings.md

@@ -0,0 +1,71 @@
+   !!! warning
+   Changing the binding does not affect source NAT. See [SNAT](https://mailcow.github.io/mailcow-dockerized-docs/firststeps-snat/) for required steps.
+
+## IPv4 binding
+
+To adjust one or multiple IPv4 bindings, open `mailcow.conf` and edit one, mulitple or all variables as per your needs:
+
+```
+# For technical reasons, http bindings are a bit different from other service bindings.
+# You will find the following variables, separated by a bind address and its port:
+
+HTTP_PORT=80
+HTTP_BIND=0.0.0.0
+HTTPS_PORT=443
+HTTPS_BIND=0.0.0.0
+
+# Other services are bound by using the following format:
+# SMTP_PORT=25 equals to SMTP_PORT=0.0.0.0:25
+# SMTP_PORT=1.2.3.4:25 will bind SMTP to the IP 1.2.3.4 on port 25
+# doveadm, SQL as well as Solr are bound to local ports only, please do not change that, unless you know what you are doing.
+
+SMTP_PORT=25
+SMTPS_PORT=465
+SUBMISSION_PORT=587
+IMAP_PORT=143
+IMAPS_PORT=993
+POP_PORT=110
+POPS_PORT=995
+SIEVE_PORT=4190
+DOVEADM_PORT=127.0.0.1:19991
+SQL_PORT=127.0.0.1:13306
+SOLR_PORT=127.0.0.1:18983
+```
+
+To apply your changes, run `docker-compose down` followed by `docker-compose up -d`.
+
+## IPv6 binding
+
+Changing IPv6 bindings is different from IPv4. Again, this has a technical background.
+
+A `docker-compose.override.yml` file will be used instead of editing the `docker-compose.yml` file directly. This is to maintain updatability, as the `docker-compose.yml` file gets updated regularly and your changes will most likely be overwritten.
+
+Edit to create a file  `docker-compose.override.yml` with the following content. Its content will be merged with the productive `docker-compose.yml` file.
+
+An imaginary IPv6 **2a00:dead:beef::abc** is given. The first suffix `:PORT1` defines the external port, while the second suffix `:PORT2` routes to the corresponding port inside the container and must not be changed.
+
+```
+version: '2.1'
+services:
+
+    dovecot-mailcow:
+      ports:
+        - '2a00:dead:beef::abc:143:143'
+        - '2a00:dead:beef::abc:993:993'
+        - '2a00:dead:beef::abc:110:110'
+        - '2a00:dead:beef::abc:995:995'
+        - '2a00:dead:beef::abc:4190:4190'
+
+    postfix-mailcow:
+      ports:
+        - '2a00:dead:beef::abc:25:25'
+        - '2a00:dead:beef::abc:465:465'
+        - '2a00:dead:beef::abc:587:587'
+
+    nginx-mailcow:
+      ports:
+        - '2a00:dead:beef::abc:80:80'
+        - '2a00:dead:beef::abc:443:443'
+```
+
+To apply your changes, run `docker-compose down` followed by `docker-compose up -d`.

mkdocs.yml

@@ -22,22 +22,23 @@ markdown_extensions:
 nav:
 - 'Information & Support': 'index.md'
 - 'Prerequisites':
-  - 'Prepare Your System': 'prerequisite-system.md'
+  - 'Prepare your system': 'prerequisite-system.md'
-  - 'DNS Setup': 'prerequisite-dns.md'
+  - 'DNS setup': 'prerequisite-dns.md'
 - 'Installation, Update & Migration':
   - 'Installation': 'i_u_m_install.md'
   - 'Update': 'i_u_m_update.md'
   - 'Migration': 'i_u_m_migration.md'
 - 'First Steps (optional)':
-  - 'SSL': 'firststeps-ssl.md'
+  - 'Advanced SSL': 'firststeps-ssl.md'
-  - 'Rspamd Web UI': 'firststeps-rspamd_ui.md'
+  - 'Rspamd UI': 'firststeps-rspamd_ui.md'
   - 'Reverse Proxy': 'firststeps-rp.md'
   - 'SNAT': 'firststeps-snat.md'
   - 'Disable IPv6': 'firststeps-disable_ipv6.md'
-  - 'Setup a relayhost': 'firststeps-relayhost.md'
+  - 'Relayhosts': 'firststeps-relayhost.md'
   - 'Logging': 'firststeps-logging.md'
   - 'Local MTA on Docker host': 'firststeps-local_mta.md'
-  - 'Sync Jobs Migration': 'firststeps-sync_jobs_migration.md'
+  - 'Sync job migration': 'firststeps-sync_jobs_migration.md'
+  - 'IP bindings': 'firststeps-ip_bindings.md'
 - 'Models':
   - 'Sender and receiver model': 'model-sender_rcv.md'
   - 'ACL': 'model-acl.md'