On 3/20/24 11:36 AM, Nick Howitt via Unbound-users wrote:
I am having a problem with a particular DNS lookup and I am not even sure how to formulate the question, so please bear with me.My setup is Internet – IPFire with Unbound 1.19.0 – ClearOS7. ClearOS runs a system called Gateway Management which is a branding of AdamNetworks’ Adam:one, a DNS filtering tool.IPFire is currently running as a recursive resolver but the same problem exists when running as a Caching DNS server. All other boxes are empty on the DNS setup screen in IPFire. SSL and TLS are not being used. I should be able to dig out the configs, if needed.With Gateway Management running, in ClearOS I can resolve 1024 and 2048 bit domainkeys (1024._domainkey.howitts.co.uk and 2048_domainkey.howitts.co.uk) with nslookup. I can resolve 4096 bit domainkeys using the dig command "dig txt 202403._domainkey.howitts.co.uk" but with nslookup I get:[root@server ~]# nslookup -q=txt 202403._domainkey.howitts.co.uk Server: 127.0.0.1 Address: 127.0.0.1#53 Non-authoritative answer: *** Can't find 202403._domainkey.howitts.co.uk: No answer Authoritative answers can be found from: howitts.co.uk origin = achiel.ns.cloudflare.com mail addr = dns.cloudflare.com serial = 2336336559 refresh = 10000 retry = 2400 expire = 604800 minimum = 1800Without Gateway Management on ClearOS 7, it all works. This may lead you to thinking it is Gateway Management but if I change ClearOS’s upstream resolver from IPFire/Unbound to Cloudflare, all lookups work. This leads me to believe Unbound is doing an invalid lookup or giving an invalid response to a particular query formatted by Gateway Managament.I have pcap files of the working and non-working lookups between ClearOS and IPFire but I don’t know how to interpret them.Can anyone please help me?
I get the exact same answer from unbound and cloudflare. Note that there is no authoritative answer. You might also have something like systemd-resolved in the way. Systemd-resolved is known to give bogus answers in certain cases, so you might want to disable it while testing.
isildur$ nslookup -q=txt 202403._domainkey.howitts.co.uk Server: 127.0.0.1 Address: 127.0.0.1#53 Non-authoritative answer:202403._domainkey.howitts.co.uk text = "v=DKIM1; p=MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzvkHMnL2cPPUzm6gXBIsaiRMAj7wpajI1cQ3VPsIzIYfBTYgU7xX50tDZnTT4SiE/2+z87gMFSRcFiM9gaejAgV+YFse2AEId2t0+xYXuNwG35dqS6WWlwZY3Rr5IIebcPSeXouuYR3nCdzgK/FCT8Y2vvKTkIDXYsJMQJulxdDAewb9/V7pNZ7J8wky6RRIKnbAEdqO" "zJ9nDEe6wUGXhrMxB2ZjM6sQLJzAgz7VE0Z52eBk/TZgdzJwLxHzeclsWVES3Mw0tdDoUKT2QLd0SB9MsOwFcR6ph/h9VERhMAtjAmUG5YlQQ1bC8nznAwHdY2IP3RUdFZOYcUlv5yPzrRvBAjfi/CmR2zHVQs7gA7b67DaMy67dURWHDhMwqXgWVNrZ4iTInWr1vLEPoNBjppn1GOkXrb+FdNoWnFM5laAEmcFK2Sie5wpzCItFjWs3f3IQZxB" "lzJHIpkvR2ZTMJ5g3DWUU3ZK1rW1kNvGLjZkox7EZH3lFfkyS6lPnfIX5XS5YYeP0RmSAWNaKinCdQq8m8SdjWDIsRJ1aohq/Qx/O1sfQMDdrwetOn6KJqOFg7dcFtvKlRrHQYyujH3dapJ10Err/xAv3iyh9B7x8C6N+qjTMjRoIfPTyLeFnAtUrFQigpj70mbZPaw9AKglDafXvnXJwn8r5/Oq3mjVKKWkCAwEAAQ=="
Authoritative answers can be found from: isildur$ nslookup -q=txt 202403._domainkey.howitts.co.uk 1.1.1.1 ;; Truncated, retrying in TCP mode. Server: 1.1.1.1 Address: 1.1.1.1#53 Non-authoritative answer:202403._domainkey.howitts.co.uk text = "v=DKIM1; p=MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzvkHMnL2cPPUzm6gXBIsaiRMAj7wpajI1cQ3VPsIzIYfBTYgU7xX50tDZnTT4SiE/2+z87gMFSRcFiM9gaejAgV+YFse2AEId2t0+xYXuNwG35dqS6WWlwZY3Rr5IIebcPSeXouuYR3nCdzgK/FCT8Y2vvKTkIDXYsJMQJulxdDAewb9/V7pNZ7J8wky6RRIKnbAEdqO" "zJ9nDEe6wUGXhrMxB2ZjM6sQLJzAgz7VE0Z52eBk/TZgdzJwLxHzeclsWVES3Mw0tdDoUKT2QLd0SB9MsOwFcR6ph/h9VERhMAtjAmUG5YlQQ1bC8nznAwHdY2IP3RUdFZOYcUlv5yPzrRvBAjfi/CmR2zHVQs7gA7b67DaMy67dURWHDhMwqXgWVNrZ4iTInWr1vLEPoNBjppn1GOkXrb+FdNoWnFM5laAEmcFK2Sie5wpzCItFjWs3f3IQZxB" "lzJHIpkvR2ZTMJ5g3DWUU3ZK1rW1kNvGLjZkox7EZH3lFfkyS6lPnfIX5XS5YYeP0RmSAWNaKinCdQq8m8SdjWDIsRJ1aohq/Qx/O1sfQMDdrwetOn6KJqOFg7dcFtvKlRrHQYyujH3dapJ10Err/xAv3iyh9B7x8C6N+qjTMjRoIfPTyLeFnAtUrFQigpj70mbZPaw9AKglDafXvnXJwn8r5/Oq3mjVKKWkCAwEAAQ=="
Authoritative answers can be found from:
smime.p7s
Description: S/MIME Cryptographic Signature
