Hi, should be a "answer too long packet truncated" problem. Try use dig with TCP or edns
Il 20 marzo 2024 12:02:50 CET, Renaud Allard via Unbound-users <unbound-users@lists.nlnetlabs.nl> ha scritto: > > >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 = 1800 >> >> Without 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: > > > -- Inviato dal mio dispositivo Android con K-9 Mail. Perdonate la brevità.
