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https://issues.apache.org/jira/browse/JAMES-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12513197
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Ralf Hauser commented on JAMES-796:
-----------------------------------
doing less inside james and e.g. using xbill's Lookup() object in general makes
sense to me.
Unfortunately, they don't appear to aim for the robustness if your own dns
server goes down either :(
org.xbill.DNS.Lookup.processResponse(Name name, SetResponse response)
...
} else if (response.isDelegation()) {
// We shouldn't get a referral. Ignore it.
referral = true;
}
> Do also query authoritative nameservers to obtain MX record
> -----------------------------------------------------------
>
> Key: JAMES-796
> URL: https://issues.apache.org/jira/browse/JAMES-796
> Project: James
> Issue Type: Improvement
> Reporter: Armin Häberling
>
> for example for zunft-oberstrass.ch
> DNSServer.lockup("zunft-oberstrass.ch", Type.MX, "MX")
> will return null, but
> DNSServer.lockup("zunft-oberstrass.ch", Type.NS, "NS")
> will return two authoritative nameservers, which then can be queried and
> return the MX record for zunft-oberstrass.ch.
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