feat: implemented ARC

.env.defaults

@@ -24,7 +24,6 @@ CERTBOT_WELL_KNOWN_NAME=
 CERTBOT_WELL_KNOWN_CONTENTS=
 SMTP_RATELIMIT_DURATION=3600000
 SMTP_RATELIMIT_MAX=300
-VANITY_DOMAINS=secret.fyi,hash.fyi,mailsire.com,hideaddress.net
 API_ENDPOINT=https://api.forwardemail.net
 API_SECRETS=secret,
 SRS_SECRET=
@@ -34,3 +33,4 @@ SHOW_STACK=true
 SHOW_META=true
 MESSAGE_ID_DOMAIN=forwardemail.net
 SLACK_API_TOKEN=
+ARC_DOMAIN=forwardemail.net

.env.schema

@@ -24,7 +24,6 @@ CERTBOT_WELL_KNOWN_NAME=
 CERTBOT_WELL_KNOWN_CONTENTS=
 SMTP_RATELIMIT_DURATION=
 SMTP_RATELIMIT_MAX=
-VANITY_DOMAINS=
 API_ENDPOINT=
 API_SECRETS=
 SRS_SECRET=

SELF-HOSTING.md

@@ -99,9 +99,18 @@ You'll also need the following dependencies installed:
     "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCojharU7eJW+eaLulQygsc/AHx2A0gyLnSU2fPGs8mI3Fhs3EVIIRP01euHg+IljMmXz9YtU+XMfZuYdSCa9NY16XjoIgub2+lkeiHHNpURIpwQJSeHxviMOfMAZ5/xSTDDoaYY2vcKytheZeLAVK2V1SuTdTp+C6B9E6AUSu1TwIDAQAB"
     ```
 
-* [python-spfcheck2][] - for validation of SPF records, see [its requirements][python-spfcheck2] for more information
+* Python v3.6+ with the following additional pip3 dependencies installed:
 
-* [python-dkim-verify][] - for validation of DKIM signatures, see [its requirements][python-dkim-verify] for more information
+  ```sh
+  sudo apt-get update
+  sudo apt purge python2.7-minimal
+  sudo apt-get install python3 python3-pip python3-setuptools
+  pip3 install --upgrade pip setuptools wheel
+  pip3 install dkimpy authres
+  pip3 install git+https://github.com/forwardemail/authentication-headers.git
+  pip3 install pyspf
+  pip3 install dnspython==1.16.0
+  ```
 
 * DNS records - you need to setup and modify your DNS records with your own self-hosted version.  See our [FAQ](https://forwardemail.net/faq) for more information (be sure to replace `forwardemail.net` in the FAQ instructions with your own domain - and make sure you do DNS lookups for all related subdomains such as `mx1.forwardemail.net`, `mx2.forwardemail.net`, and `spf.forwardemail.net` – and clone them with your own).  We recommend using Cloudflare or Amazon Route 53 for DNS hosting.
 
@@ -182,10 +191,6 @@ See the [app.js](app.js) and [ecosystem.json](ecosystem.json) files for more ins
 
 [openssl]: https://www.openssl.org/
 
-[python-spfcheck2]: https://github.com/niftylettuce/python-spfcheck2#requirements
-
-[python-dkim-verify]: https://github.com/niftylettuce/python-dkim-verify#requirements
-
 [do-guide]: https://www.digitalocean.com/community/questions/how-do-i-switch-my-dns-resolvers-away-from-google
 
 [tr-guide]: https://www.techrepublic.com/article/how-to-set-dns-nameservers-in-ubuntu-server-18-04/

helpers/logger.js

@@ -49,8 +49,8 @@ if (env.SLACK_API_TOKEN) {
 
   axe.setCallback(async (level, message, meta) => {
     try {
-      // if meta did not have `slack: true` or not fatal
-      if (!meta.slack && !['fatal'].includes(level)) return;
+      // if meta did not have `slack: true` or not a specific level
+      if (!meta.slack && !['fatal', 'error'].includes(level)) return;
 
       // otherwise post a message to the slack channel
       const fields = [