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 &lt;lroof(a)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 _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org <mailto:sr-users@lists.sip-router.org> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Carsten Bock CEO (Geschäftsführer) ng-voice GmbH Millerntorplatz 1 20359 Hamburg / Germany http://www.ng-voice.com mailto:carsten@ng-voice.com <mailto:carsten@ng-voice.com> Office +49 40 5247593-40 Fax +49 40 5247593-99 Sitz der Gesellschaft: Hamburg Registergericht: Amtsgericht Hamburg, HRB 120189 Geschäftsführer: Carsten Bock Ust-ID: DE279344284 Hier finden Sie unsere handelsrechtlichen Pflichtangaben: http://www.ng-voice.com/imprint/ _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

Hi, can you run kamcmd dns.view? There you should see, what records are cached and when they will be refreshed. Thanks, Carsten 2016-07-27 17:04 GMT+02:00 Louis-Olivier Roof &lt;lroof(a)jive.com <mailto:lroof@jive.com>>: 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: <mailto:sr-users@lists.sip-router.org> <mailto:sr-users@lists.sip-router.org <mailto:sr-users@lists.sip-router.org>> <mailto:carsten@ng-voice.com <mailto:carsten@ng-voice.com>> list _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org <mailto:sr-users@lists.sip-router.org> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Carsten Bock CEO (Geschäftsführer) ng-voice GmbH Millerntorplatz 1 20359 Hamburg / Germany http://www.ng-voice.com mailto:carsten@ng-voice.com <mailto:carsten@ng-voice.com> Office +49 40 5247593-40 Fax +49 40 5247593-99 Sitz der Gesellschaft: Hamburg Registergericht: Amtsgericht Hamburg, HRB 120189 Geschäftsführer: Carsten Bock Ust-ID: DE279344284 Hier finden Sie unsere handelsrechtlichen Pflichtangaben: http://www.ng-voice.com/imprint/ _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users