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<div class="moz-cite-prefix">On 11/7/2020 10:15 AM, Reindl Harald
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:4037a502-df31-22cf-27fa-4cc60658cf38@thelounge.net"><br>
<a class="moz-txt-link-freetext"
href="https://tools.ietf.org/html/rfc1537"
moz-do-not-send="true">https://tools.ietf.org/html/rfc1537</a>
<br>
Common DNS Data File Configuration Errors
<br>
<br>
6. Missing secondary servers
<br>
<br>
> It is required that there be a least 2 nameservers
<br>
> for a domain.
<br>
<br>
-----------------------------
<br>
<br>
that above is common knowledge virtually forever and the
difference of "must" and "should" in IETF wordings is also very
clear
</blockquote>
<p>While I agree this is common knowledge as a best practice, this
rfc is a memo NOT a standard from my reading:<br>
</p>
<pre> This memo provides information for the Internet community. It does
not specify an Internet standard. Distribution of this memo is
unlimited.
Regards,
KAM
</pre>
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