Thanks for your prompt answer Carsten,

According to the docs, the cache should be periodically invalidated
according to the replies TTL (bounded by config values).

So leaving the cache ON should be OK and still produce DNS queries,
which is not what I'm seeing.

Am I misunderstanding something?

Thanks!

Louis-Olivier

On 2016-07-27 10:51 AM, Carsten Bock wrote:
> Hi Louis-Olivier,
>
> you should look at the DNS-Parameters of the Core:
> http://www.kamailio.org/wiki/cookbooks/devel/core#dns_parameters
>
> Kamailio caches DNS results by default (which can be turned off).
>
> Thanks,
> Carsten
>
> 2016-07-27 16:47 GMT+02:00 Louis-Olivier Roof <lroof@jive.com
> <mailto:lroof@jive.com>>:
>
>     Dear Kamailio users,
>
>     Ref: http://kamailio.org/docs/modules/4.2.x/modules/tm.html#tm.f.t_relay
>
>     Using t_relay([host, port]) to relay messages to a specific host does
>     not seem to generate DNS queries to the said host after Kamailio has
>     initially processed the configuration file.
>
>     It resolves the host once at startup then continues using the same
>     IP after.
>
>     Is that expected behavior? Anyone has had this issue before and found a
>     way to work around it?
>
>     Note that for this specific application, messages need to be relayed to
>     a specified host (different from current R-URI) and this host needs to
>     be resolved by DNS during normal operation, not only at startup.
>
>     Thanks!
>
>     Louis-Olivier
>
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>
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