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<p class=MsoNormal>I am using DNSMASQ on a server that also runs Trixbox
Asterisk IP PBX. Asterisk has an unfortunate trait that if SIP trunks that
register with a VOIP provider cannot obtain DNS resolution all SIP extensions
stop working for internal phone calls. I installed DNSMASQ in an attempt to
stop this from happening, the theory being that DNSMASQ would resolve the
address from its cache. This worked fine until I had a long Internet outage
when after about 15 minutes things stopped working. My guess is that DNSMASQ
flushed the cache and needed to go to another server for updated information.
Can anyone tell me how long DNSMASQ holds information in the cache and if it is
possible to lengthen that time. Cache size is not an issue as DNSMASQ is only
used to resolve the SIP trunk addresses therefore the cache is very small.<o:p></o:p></p>
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