DMARCbis (RFC 9989): What Changed and Must You Edit Records?
DMARCbis (RFC 9989, 9990, 9991) explained: new np, psd and t tags, pct/rf/ri removed, the DNS tree walk, and whether you need to edit your DMARC record.
October 6, 2026
MTA-STS Generator: TXT Record and Policy File
Generate the _mta-sts TXT record, the mta-sts.txt policy file and its hosting URL, with an optional TLS-RPT record.
October 6, 2026
TLS-RPT Record Generator: _smtp._tls TXT Record
Generate a TLS-RPT TXT record at _smtp._tls with mailto and https report destinations, encoded the way RFC 8460 requires.
October 6, 2026
chan_sip to PJSIP Migration: sip_to_pjsip.py, Option Mapping, Tests
Migrate from chan_sip to PJSIP before Asterisk 21+: run sip_to_pjsip.py, fix what it misses, map common options, use fwconsole on FreePBX, and test.
October 6, 2026
Asterisk CLI Commands Cheat Sheet: PJSIP, Calls, Dialplan, Logs
PJSIP-era Asterisk CLI cheat sheet: endpoints, contacts, registrations, SIP and RTP debugging, dialplan, logging and safe restarts, checked on Asterisk 22.
October 6, 2026
PJSIP Endpoint Unreachable or Unavailable: Fix Qualify and NAT
Fix PJSIP endpoints and contacts showing Unreachable or Unavailable: what qualify does, how to read contact status, and fixing NAT keepalives, firewalls and stale contacts.
October 6, 2026
FreePBX PJSIP Trunk Setup: Registration, IP Auth, Routes, NAT
Set up a provider-neutral PJSIP SIP trunk in FreePBX 17: registration vs IP authentication, NAT, codecs, outbound and inbound routes, verification and fixes.
October 6, 2026
Upgrade FreePBX 16 to 17: Backup, Restore and Migration Checklist
Move from FreePBX 16 (SNG7) to FreePBX 17 (Debian 12) with backup and restore: CLI restore options, chan_sip conversion, licences and a cut-over checklist.
October 6, 2026
FreePBX Responsive Firewall vs Intrusion Detection (FreePBX 17)
FreePBX Responsive Firewall vs Intrusion Detection explained, why both are missing on open-source-only FreePBX 17, and how to rebuild the protection with fail2ban and your own firewall.
October 6, 2026
Asterisk and FreePBX Toll Fraud Prevention: 10-Point Checklist
A 10-point toll-fraud checklist for Asterisk and FreePBX: SIP allow-lists, passwords, outbound patterns, channel limits, working fail2ban, alerts and incident steps.
October 6, 2026
3CX vs FreePBX: Licensing, Hosting, Features and Lock-in (2026)
Neutral 3CX vs FreePBX comparison for admins (Oct 2026): licensing, cost, hosting, features by edition, customisation and lock-in, sourced from vendor pages.
October 6, 2026
Asterisk Call Recording with MixMonitor: Formats, Stereo, Retention
Set up Asterisk and FreePBX call recording with MixMonitor: options, stereo with r() and t(), file locations, formats, MP3 conversion and safe retention.
October 6, 2026