Small Business Tech Solutions

SPF, DKIM, and DMARC Test

A cute little website to test SPF, DKIM, and DMARC.

https://www.learndmarc.com/

Originally posted:

November 3, 2021

Last updated:

July 6, 2022

Linux and Internet

DSL SNR and Line Attenuation
Latency Test
LUKS Encryption
Reboot Script
SPF, DKIM, and DMARC Test

Windows

Disable Outlook 365 Autoconfigure
Exchange ACME PowerShell Script
Removing a Domain Controller
Setting a Windows Server to Update Time from the Internet
Unison

FreePBX

Bypass the Message Center on Polycom Phones
Disable Ring on Page for Polycom Phones
Flexible Line Key Assignments for Polycom Phones
Integrate DND with FreePBX on a Polycom Phone

General

Concatenated SMS
pfBlocker Lists
SpamAssassin Custom Scores

Search