James Harper wrote:
This is a problem that affects more than just asterisk, so I'm sure there are solutions out there! One thing you might do is to put a trailing '.' on all fully qualified DNS names. Without the '.', the system will first try appending the default domain(s), which will cause extra lookups and delays. If all the names that you care about can be resolved locally without needing the internet then the trailing '.' should make it work much faster. Of course, I'm assuming that you do have a local DNS of some sort, and the delays you are seeing are caused by your systems thinking they want to look up external names.
Well after three hours of playing, and knowing it's rank awful to respond to your own posts, I would like to review what I've learned and maybe save someone else a few million headaches.
I installed dproxy, which is a caching nameserver, and thought at first my problems were all solved. I could lookup names just fine on the machine, I saw the names show up in the dproxy cache file (including the names of the IAX and SIP servers I register with). I made a test call through one of my ITSPs and it worked just fine.
Then the sky fell: a PSTN call came in, and as the server rang the phones in the house (one of which is a SIP phone) things locked up tight, just like there wasn't any DNS!!
I did a little boinking around on the CLI, and noticed that all my IAX registrations had gone just fine, BUT NOT ONE OF THE SIP REGISTRATIONS succeeded.
I'll cut to the quick, although I have to disclaim this as "the best guess I have:" it turns out that if the DNS server the Asterisk box is pointing to doesn't do SRV lookups, and "srvlookup=yes" in sip.conf, it's Goodbye Joe.
I set that option to "no" and restarted. Now everything appears to be working just fine.
Whew. B. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
