DMARC can stop spoofed spam and phishing from reaching you and your customers, protecting your information security and your brand. However, complexity and misconceptions deter many organizations from ever deploying it. Part mythbusting , part implementation guide, this post explains the shortcomings of SPF and DKIM, what DMARC is, how to deploy DMARC properly, and how to respond to DMARC reports – all without the need for an additional vendor, thanks to open source software!
Here’s how to build and install FFmpeg from source with all the bells and whistles (i.e codec support). We’ll install it as a custom Debian package using
checkinstall. That way, any other package that depends on the
ffmpeg package will recognize that it is already installed, and won’t try to fetch it from the Debian or Ubuntu software repositories.