<div dir="ltr"><div>Hi Florian.</div><div>Well since you mention it, may we see your BIND configuration? Also "named -V", please and, if you can, a packet capture (preferably binary pcap, not just a few lines of tcpdump output) showing what your server is doing at the time you see these messages in the logs.</div><div><br></div><div>Cheers, Greg</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, 4 Jul 2025 at 08:56, Florian Piekert via bind-users <<a href="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello all,<br>
<br>
I frequently have this in my logs<br>
<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 2600:9000:5303:c800::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: resolver: notice: DNS format error from 2600:9000:5303:c800::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 2600:9000:5303:c800::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 2600:9000:5304:dc00::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: resolver: notice: DNS format error from 2600:9000:5304:dc00::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 2600:9000:5304:dc00::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 2600:9000:5306:cb00::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: resolver: notice: DNS format error from 2600:9000:5306:cb00::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 2600:9000:5306:cb00::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 2600:9000:5300:5200::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: resolver: notice: DNS format error from 2600:9000:5300:5200::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 2600:9000:5300:5200::1#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 205.251.195.200#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: resolver: notice: DNS format error from 205.251.195.200#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 205.251.195.200#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 205.251.196.220#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: resolver: notice: DNS format error from 205.251.196.220#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 205.251.196.220#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 205.251.198.203#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: resolver: notice: DNS format error from 205.251.198.203#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 205.251.198.203#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 205.251.192.82#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: resolver: notice: DNS format error from 205.251.192.82#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
May  4 14:29:16 sonne named[4035767]: DNS format error from 205.251.192.82#53 resolving <a href="http://feedback-smtp.us-east-1.amazonses.com/AAAA" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com/AAAA</a> for 127.0.0.1#44099: Name <a href="http://us-east-1.amazonses.com" rel="noreferrer" target="_blank">us-east-1.amazonses.com</a> (SOA) not subdomain of zone <a href="http://feedback-smtp.us-east-1.amazonses.com" rel="noreferrer" target="_blank">feedback-smtp.us-east-1.amazonses.com</a> -- invalid response<br>
<br>
and was wondering IF there is a misconfiguration on my bind?<br>
<br>
My guess is no, but I thought I'd better ask for confirmation.<br>
<br>
Florian<br>
<br>
-- <br>
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</blockquote></div>