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From "Stefano Bagnara (JIRA)" <server-...@james.apache.org>
Subject [jira] Commented: (JAMES-796) Do also query authoritative nameservers to obtain MX record
Date Mon, 09 Jul 2007 15:07:04 GMT

    [ https://issues.apache.org/jira/browse/JAMES-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12511146
] 

Stefano Bagnara commented on JAMES-796:
---------------------------------------

At a first glance it seems to me that you are using a buggy dns cache (dns server).

It's not up to the resolver (dns client) to iterate against NS: this is what dns caches are
for.
If you have the behaviour above then I guess your dns servers (again, the correct name is
"dns caches", but we use dns servers in JAMES Server configuration file) have problems.

Try simply changing the dns server configuration to some better server.

> 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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