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Flexible server monitoring

Introducing Simon 5!

Simon version 5 is now available. It is a massive update, introducing a much-requested feature: syncing the Simon data between multiple Macs, plus a Simon Status service, a Link Checker filter, improved Find filter, iMessage and Speak Error notifiers, a new app icon, and much more.

Important: please note that Simon 5 requires a minimum of macOS 10.12 (Sierra), and is a paid upgrade from Simon 4. Purchasers since September 1, 2020 automatically get a version 5 license (that also works in previous versions).

Read the Simon What's New page for details.

Failed ports


I am planning to leave the service SiteUptime the system is good but with our present needs it is overkill and to expensive.
An old Mini I have with the old precious software Whistle Blower and PageSentry does not cover what I need tested those days. The Mini is on 10.6.8 and for some reasons can not be upgraded. I tested Simon 3.6.4 and (except 995/465) all went well except the the rock solid Mini chrashed every day. So this is not an option.

I then configured another newer Mini, that is a spare machine, with a fresh 10.11.2 and only Simon 4.1.1, that crashed all over. Switching to the beta 4.2b1 seems to work fine.

Except that the port tests 995 and 465 fails randomly, approximately 20% fail. I have tried adjusting settings but not figuring out why. It works 100% with SiteUptime, our server is running Stunnel. All other ports works fine: 110, 587, dns, http (have not figured out how to ftp yet)

Is it possible do get this to work and if not, is it possible like for example Whistle Blower, to set Simon to only trigger after >1 consecutive failed check?

David Sinclair's picture

Re: Failed ports

Yes, you can configure Simon to only notify after a certain number of consecutive failures. See the Options page of the Notifier.

As to why they are failing, you could look in the Activity log to see what the errors are. Feel free to post here if you can't figure it out (you can't attach screenshots to comments, but you can edit your post to add them), or email me.