diff --git a/README.md b/README.md
index fd9b990..fc2bb70 100644
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+++ b/README.md
@@ -100,200 +100,7 @@ For a complete list of options, see `default.nix`.
## How to Set Up a 10/10 Mail Server Guide
-Mail servers can be a tricky thing to set up. This guide is supposed to run you
-through the most important steps to achieve a 10/10 score on `mail-tester.com`.
-
-What you need:
-
- * A server with a public IP (referred to as `server-IP`)
- * A Fully Qualified Domain Name (`FQDN`) where your server is reachable,
- so that other servers can find yours. Common FQDN include `mx.example.com`
- (where `example.com` is a domain you own) or `mail.example.com`. The domain
- is referred to as `server-domain` (`example.com` in the above example) and
- the `FQDN` is referred to by `server-FQDN` (`mx.example.com` above).
- * A list of domains you want to your email server to serve. (Note that this
- does not have to include `server-domain`, but may of course). These will be
- referred to as `domains`. As an example, `domains = [ example1.com,
- example2.com ]`.
-
-### A) Setup server
-
-The following describes a server setup that is fairly complete. Even though
-there are more possible options (see `default.nix`), these should be the most
-common ones.
-
-```nix
-{ config, pkgs, ... }:
-{
- imports = [
- (builtins.fetchTarball "https://github.com/r-raymond/nixos-mailserver/archive/v2.1.3.tar.gz")
- ];
-
- mailserver = {
- enable = true;
- fqdn = <server-FQDN>;
- domains = [ <domains> ];
-
- # A list of all login accounts. To create the password hashes, use
- # mkpasswd -m sha-512 "super secret password"
- loginAccounts = {
- "user1@example.com" = {
- hashedPassword = "$6$/z4n8AQl6K$kiOkBTWlZfBd7PvF5GsJ8PmPgdZsFGN1jPGZufxxr60PoR0oUsrvzm2oQiflyz5ir9fFJ.d/zKm/NgLXNUsNX/";
-
- aliases = [
- "postmaster@example.com"
- "postmaster@example2.com"
- ];
-
- # Make this user the catchAll address for domains example.com and
- # example2.com
- catchAll = [
- "example.com"
- "example2.com"
- ];
- };
-
- "user2@example.com" = { ... };
- };
-
- # Extra virtual aliases. These are email addresses that are forwarded to
- # loginAccounts addresses.
- extraVirtualAliases = {
- # address = forward address;
- "abuse@example.com" = "user1@example.com";
- };
-
- # Use Let's Encrypt certificates. Note that this needs to set up a stripped
- # down nginx and opens port 80.
- certificateScheme = 3;
-
- # Enable IMAP and POP3
- enableImap = true;
- enablePop3 = true;
- enableImapSsl = true;
- enablePop3Ssl = true;
-
- # Enable the ManageSieve protocol
- enableManageSieve = true;
-
- # whether to scan inbound emails for viruses (note that this requires at least
- # 1 Gb RAM for the server. Without virus scanning 256 MB RAM should be plenty)
- virusScanning = false;
- };
-}
-```
-
-After a `nixos-rebuild switch --upgrade` your server should be good to go. If
-you want to use `nixops` to deploy the server, look in the subfolder `nixops`
-for some inspiration.
-
-
-### B) Setup everything else
-
-#### Step 1: Set DNS entry for server
-
-Add a DNS record to the domain `server-domain` with the following entries
-
-| Name (Subdomain) | TTL | Type | Priority | Value |
-| ---------------- | ----- | ---- | -------- | ----------------- |
-| `server-FQDN` | 10800 | A | | `server-IP` |
-
-This resolved DNS equries for `server-FQDN` to `server-IP`. You can test if your
-setting is correct by
-
-```
-ping <server-FQDN>
-64 bytes from <server-FQDN> (<server-IP>): icmp_seq=1 ttl=46 time=21.3 ms
-...
-```
-
-Note that it can take a while until a DNS entry is propagated.
-
-#### Step 2: Set rDNS (reverse DNS) entry for server
-Wherever you have rented your server, you should be able to set reverse DNS
-entries for the IP's you own. Add an entry resolving `server-IP` to
-`server-FQDN`
-
-You can test if your setting is correct by
-
-```
-host <server-IP>
-<server-IP>.in-addr.arpa domain name pointer <server-FQDN>.
-```
-
-Note that it can take a while until a DNS entry is propagated.
-
-#### Step 3: Set `MX` Records
-
-For every `domain` in `domains` do:
- * Add a `MX` record to the domain `domain`
-
- | Name (Subdomain) | TTL | Type | Priority | Value |
- | ---------------- | ----- | ---- | -------- | ----------------- |
- | `domain` | | MX | 10 | `server-FQDN` |
-
-You can test this via
-```
-dig -t MX <domain>
-
-...
-;; ANSWER SECTION:
-<domain> 10800 IN MX 10 <server-FQDN>
-...
-```
-
-Note that it can take a while until a DNS entry is propagated.
-
-#### Step 4: Set `SPF` Records
-
-For every `domain` in `domains` do:
- * Add a `SPF` record to the domain `domain`
-
- | Name (Subdomain) | TTL | Type | Priority | Value |
- | ---------------- | ----- | ---- | -------- | ----------------- |
- | `domain` | 10800 | TXT | | `v=spf1 ip4:<server-IP> -all` |
-
-You can check this with `dig -t TXT <domain>` similar to the last section. Note
-that `SPF` records are set as `TXT` records since RFC1035.
-
-Note that it can take a while until a DNS entry is propagated. If you want to
-use multiple servers for your email handling, don't forget to add all server
-IP's to this list.
-
-#### Step 5: Set `DKIM` signature
-
-In this section we assume that your `dkimSelector` is set to `mail`. If you have a different selector, replace
-all `mail`'s below accordingly.
-
-For every `domain` in `domains` do:
- * Go to your server and navigate to the dkim key directory (by default
- `/var/dkim`). There you will find a public key for any domain in the
- `domain.txt` file. It will look like
- ```
- mail._domainkey IN TXT "v=DKIM1; r=postmaster; g=*; k=rsa; p=<really-long-key>" ; ----- DKIM mail for domain.tld
- ```
- * Add a `DKIM` record to the domain `domain`
-
- | Name (Subdomain) | TTL | Type | Priority | Value |
- | ---------------- | ----- | ---- | -------- | ----------------- |
- | mail._domainkey.`domain` | 10800 | TXT | | `v=DKIM1; p=<really-long-key>` |
-
-
-You can check this with `dig -t TXT mail._domainkey.<domain>` similar to the last section.
-
-Note that it can take a while until a DNS entry is propagated.
-
-
-### C) Test your Setup
-
-Write an email to your aunt (who has been waiting for your reply far too long),
-and sign up for some of the finest newsletters the Internet has. Maybe you want
-to sign up for the [SNM Announcement List](https://www.freelists.org/list/snm)?
-
-Besides that, you can send an email to [mail-tester.com](https://www.mail-tester.com/) and see how you score,
-and let [mxtoolbox.com](http://mxtoolbox.com/) take a look at your setup, but if you followed
-the steps closely then everything should be awesome!
-
+Check out the [Complete Setup Guide](https://github.com/r-raymond/nixos-mailserver/wiki/A-Complete-Setup-Guide) in the project's wiki.
## How to Backup