A firewall configuration issue

On Thu, 18 Feb 2021 10:09:44 -0500, "lists-md-configuration@mdaemon.com (Edmund Cramp)" <lists-md-configuration@mdaemon.com> wrote:
I started seeing spam filter and AV updates failing last night, I am just posting this in case anyone else has the same issues.
The problems all started after I updated my pfsense+ firewall to the latest 21.02 version which appears to have removed IPv4 DNS support. I have had MDaemon configured to use the firewall DNS server by setting MDaemon to "Use Windows DNS settings" for years now. This stopped working after the firewall update and unchecking the "Use Windows DNS settings" in MDaemon fixed all the problems.
Clearly this is not an MDaemon problem, it's the firewall DNS server that only appears to work on IPv6 now
 

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