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From "Ralf Hauser (JIRA)" <server-...@james.apache.org>
Subject [jira] Commented: (JAMES-796) Do also query authoritative nameservers to obtain MX record
Date Tue, 17 Jul 2007 10:07:05 GMT

    [ https://issues.apache.org/jira/browse/JAMES-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12513197
] 

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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