On Fri, Nov 7, 2014 at 1:59 PM, Keith Keller kkeller@wombat.san-francisco.ca.us wrote:
On 2014-11-07, Iain Morris iain.t.morris@gmail.com wrote:
For some fast and free monitoring along with DNS verification/blacklist/config checks of your MX records, MXToolbox lets you monitor one domain for free. Nice to have an external, independent source checking your public MTA. Nagios is still what I would choose for minute-by-minute checks but MXToolbox is free, and isn't tied to your infrastructure in any way.
I know we're getting a littl off topic, so I'll ask first: there are a bunch of external services I use to monitor things like DNS and SMTP which are difficult to get a true handle on from the inside. Is it too off-topic to talk about some of these resources on list?
(MXToolbox looks pretty interesting, I'll look into it for myself later.)
If you want to run your own - and have remote systems to handle it, opennms can run remote monitor agents (via java remoting) that report back to the central server.