I've been using mxtoolbox.com for free for years for their one domain free monitoring subscription. I get an email every Monday with a green check box for fia.org and I'm happy.
I want to add a separate IP address (our hosted Aptify server) which sends registration confirmations and other low-to-moderate volume messages via a SMTP connector through our 365 Tenant. When we first stood this up last week, Microsoft blocked the IP address. The Aptify Cloud team submitted a delisting request - and the IP was allowed in 1-2 days.
I don't know if that will be permanent - or if something could trigger it to be banned again, so I wondered if a monitoring service could monitor that IP address along with my domain, for free. Otherwise, the membership team is forced to intuit that something is wrong - and that's not fair to them.
MXToolbox has a 1 monitor limit - so that was out - as the next level of service was expensive for features I already had elsewhere (I suppose I could sign up with a different email address, but that feels inelegant).
I found a zoho service called 24x7 - but it's unclear if it's included for free.
And finally, I found blacklistmaster.com which may or may not be free for 2 items.
Are there others out there you are using that might monitor 2 items for free or relatively inexpensive? Thanks for your suggestions.
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Adam Kuhn
Director, IT
202-772-3002
akuhn@fia.org------------------------------