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icebound.dev
> > Martin has a testing tool > https://salsa.debian.org/mdosch/xmpp-dns Come to think of it, it wouldn't be too hard to write a basic shell script to wrap this, slap it on a tiny vps somewhere and then have it run as a cron job maybe every hour or so and sendmail if there is any issues. Then again I doubt it would be too difficult to PR an extra flag to specify an email to send the results to. ↺
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icebound.dev
Either works, the former is probably better though as it can be easily tweaked and modified