dnssec-analyzer.verisignlabs.com aaaa lookup fail

[Mark Andrews]

And the SMTP server doesn’t need to listen on IPv6 if it isn’t going to accept messages over that transport. Talk about a way to DoS yourself. 

-- 
Mark Andrews

> On 30 Apr 2024, at 06:19, Lee <ler762 at gmail.com> wrote:
> 
> On Sun, Apr 28, 2024 at 2:18 AM Walter H. via bind-users
> <bind-users at lists.isc.org> wrote:
> 
> something that I replied to and got this in response:
> 
> Error Icon
> Message blocked
> Your message to Walter.H@[..snip..] has been blocked. See technical
> details below for more information.
> 
> The response from the remote server was:
> 554 5.7.1 : Client host rejected: Use IPv4
> 
> 
> 
> Which is strangely appropriate when trying to troubleshoot an issue
> that applies only to IPv6.
> But I've forgotten how to turn off IPv6 :(
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