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Stefano Marinelli
@stefano@mastodon.bsd.cafe  ·  activity timestamp 6 days ago

I have moved my blogs to my @OpenBSDAms VM, as I need that 1 euro small VM for some tests (spoiler: chatmail server for Delta Chat). The DNS TTL is set to 300 seconds, which is 5 minutes. After more than 30 minutes, some hosts are still connecting to that old record.

I agree with @nuintari - the problem usually isn't the DNS but the MISCONFIGURED dns. And it's full of them, out there.

#IT #SysAdmin #DNS

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computerywar
@computerywar@infosec.exchange replied  ·  activity timestamp 5 days ago

@stefano @OpenBSDAms @nuintari 1 euro small vm? where is this option??

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The Psychotic Network Ferret
@nuintari@mastodon.bsd.cafe replied  ·  activity timestamp 5 days ago

@computerywar @stefano @OpenBSDAms Also yes....

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Benoit Poulet
@poulet_benoit@fosstodon.org replied  ·  activity timestamp 6 days ago

@stefano @OpenBSDAms @nuintari

The TTL was set ton 300s how long time ago ?

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Stefano Marinelli
@stefano@mastodon.bsd.cafe replied  ·  activity timestamp 6 days ago

@poulet_benoit @OpenBSDAms @nuintari at least 6 months ago

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The Psychotic Network Ferret
@nuintari@mastodon.bsd.cafe replied  ·  activity timestamp 6 days ago

@stefano @poulet_benoit @OpenBSDAms

Relativistic TTL?

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Joel Carnat ♑ 🤪
@joel@gts.tumfatig.net replied  ·  activity timestamp 6 days ago

@stefano some documentation state that you can force longer TTL on your local resolver…

@OpenBSDAms @nuintari

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Justin
@justin@toot.io replied  ·  activity timestamp 6 days ago

@stefano @OpenBSDAms @nuintari I usually check with https://www.whatsmydns.net/ and if you're not matching those servers, too bad. 😂

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