On Thu, December 9, 2010 06:12, Henrik Størner wrote:

In <AANLkTimG_j8Z6ZmZ8K9pHHdrgqE50BVj7ddMj6fw3bCO at mail.gmail.com> Jayanta Kundu <jayantak007 at gmail.com> writes:

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2. If I check http(Client side Collector Server) error is: http://abixymon.mtncameroon.net/ - DNS error Your Xymon server running the http test cannot do a DNS-lookup for abixymon.mtncameroon.net . Either fix the DNS issue, or specify the IP-address to use for the http test with the http://abixymon.mtncameroon.net=10.0.0.1/ syntax to override the DNS lookup.

Eureka! Didn't know about the "=ip" syntax, so this post sent me to the manpage. This is perfect for our situation of Internet-facing virtual hosts with private addresses in the internal split DNS. Up to now, if a NAT failure occurred for one of these, we didn't necessarily know, because we were testing via the RFC1918 address. Couldn't use straight-IP URLs because of virtual host settings and rewrite rules.