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Link Mauve
JRHaigh, note though that DNS doesn’t propagate, it gets cached.
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Link Mauve
If you control your resolver, you can tell it to flush its cache and then TTL doesn’t matter to you.
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JRHaigh
Link Mauve: Yep. But in the end, it wasn't that... It was presumably something to do with metadata for the MUC, as resending the invite was one way to unstick it (from owner side), close+reopen was another way to unstick it (from invitee side). (There were 2 invitees, both stuck like this. I unstuck my spare/test account via close+reopen; whereas my brother was AFK at the time, I tried resending the invite and his status within the MUC immediately changed to online, indicating that that was a second way to unstick -- and more convenient to him because when he came back to keyboard quarter an hour later, it was all working! :-D )
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Link Mauve
Right, just telling you for the next time you want to debug DNS. :)
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Link Mauve
Hint: it’s always DNS.
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JRHaigh
And I'm really glad that it started working early enough that we had time for a good chat on the family Jabber, yesterday evening, because when he's back at work we sometimes don't hear from him for weeks. :-/
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JRHaigh
> Right, just telling you for the next time you want to debug DNS. :) Yep, thanks. And I'm just feeding back that useful experience about the unsticking. :-) > Hint: it’s always DNS. Lol, yes, it does seem that way most of the time!