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@jonaaix
jonaaix / stalwart.md
Last active August 5, 2025 09:11
Setup Stalwart SMTP Relay with flexible domain authorization

Setup Guide: Stalwart als skalierbarer SMTP-Relay für SaaS

Dieses Dokument beschreibt die Einrichtung eines Stalwart Mail-Servers als reinen SMTP-Relay. Das Setup ist darauf ausgelegt, E-Mails sowohl von eigenen Domains als auch im Namen von Kunden einer SaaS-Anwendung (Whitelabeling) zu versenden.

Architektur-Ziele:

  • Sicherheit: Kein offenes Relay, nur authentifizierter Versand. Sichere HTTPS-Verbindung für die Admin-Oberfläche.
  • Zustellbarkeit: Maximale Reputation durch korrekte SPF-, DKIM- und DMARC-Konfiguration.
  • Skalierbarkeit: Einfaches Hinzufügen von Kundendomains ohne Server-Neukonfiguration.
  • Verwaltbarkeit: Einsatz von Docker Compose und einer Caddy-gesicherten Web-UI.
@jonaaix
jonaaix / bootstrapgrid.css
Created March 21, 2025 14:56
Bootstrap Grid Standalone
/*!
* Bootstrap Grid v5.3.2 (https://getbootstrap.com/)
* Copyright 2011-2023 The Bootstrap Authors
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
*/
.container,
.container-fluid,
.container-xxl,
.container-xl,
.container-lg,
@jonaaix
jonaaix / convert.php
Last active March 30, 2024 23:12
Convert Google Fonts embed URL to self-hosted font package
<?php
/*
How to Use:
1. Go to GoogleFonts, and save the URL from the font embedding code in a new directory as `gfont-data.css`.
2. Save this script in the same directory as `convert.php`
3. Run the script via the command line: `php -f convert.php`.
4. The script will create a `downloaded` folder, download all fonts into it, and update the CSS file to point to these local copies.
5. The updated CSS file will be saved as `fonts.css` in the same directory.t
6. Now you can upload it to your site and import it using `@import url(/assets/fonts/fonts.css)`.
@jonaaix
jonaaix / wp-github-plugin-updater.php
Last active February 10, 2025 19:30
Update WordPress Plugin from GitHub Releases
<?php
/**
* Retrieve updates from GitHub
* Add the following snipped to your main wordpress plugin file
* Note that the public github API has a rate limit of 60 per hour per IP
*/
add_filter('site_transient_update_plugins', function($transient) {
// Config
$wpPluginSlug = 'my-wordpress-plugin';
@jonaaix
jonaaix / Controller.php
Last active December 25, 2023 23:35
Laravel download CSV string as file
<?php
$csv = \App\Services\DataExportService::createCsvExport();
$BOM = "\xEF\xBB\xBF";
return response()->streamDownload(
function () use ($BOM, $csv) {
echo $BOM . $csv;
},
'data-export.csv',
@jonaaix
jonaaix / BackupDbImportCmd.php
Last active February 14, 2024 16:53
Laravel MySQL DB Backup Command
<?php
namespace App\Console\Commands\DB;
use Illuminate\Console\Command;
class BackupDbImportCmd extends Command {
/**
* The name and signature of the console command.
*/
@jonaaix
jonaaix / EUVatService.php
Last active December 21, 2023 10:19
EU VAT-ID validation in PHP
<?php
namespace App\Services;
use Http;
use Log;
class EUVatService {
/**
* Check vat in EU interface
@jonaaix
jonaaix / wp-font-awesome-local.md
Last active July 5, 2024 07:22
WordPress Local FontAwesome with Plugin
@jonaaix
jonaaix / unv-card-grid.css
Created July 30, 2022 14:30
Card Grid Layout – auto-growing by screen size
/**
* Card Grid Layout
* auto-growing by screen size
*/
body {
--unv-card-grid-base-size: 300px;
--unv-card-grid-gap: 8px;
}
@jonaaix
jonaaix / typescript-array-natural-sort.ts
Last active November 29, 2021 12:19
TypeScript array natural sort (optional object property)
/**
* TS array natural sort (optional object property)
*/
function naturalObjectSort<T>(arr: T[], objPropertyPath = ''): T[] {
return [...arr].sort((a: T, b: T) => {
let propPathParts = objPropertyPath.split('.');
const getDeepValue = (obj: T): string => {
let value = obj as any;
for (let i = 0; i < propPathParts.length; i++) {