Actually not my local but Telegram server can’t reach webhook endpoint on my server. (Failed to resolve host: Temporary failure in name resolution)
Timestamp around September 16, 2025 3:43:27 PM GMT
I checked again by September 16, 2025 7:29:27 PM and it’s working.
everyone here (especially cc @uncvrd since you emailed me about one specific timestamp yesterday): we’ve caught something else suspicious originating from AT&T, and have rolled out a workaround for that (only rolled out to the US currently). Can yall monitor if DNS resolution fails again? If so, please let us know and we’ll need to look at other, more long-shot hypothesis.
Thanks for digging into this!
I have been checking periodically over the last 24 hours, and so far I haven’t seen any issues.
I’ll report back if I am able to reproduce the issue again.
Ozzie
@PeterCxy thanks a lot for your prompt help! So far so good, I’ll keep you posted. Really appreciate it
Thanks all! It looks like this is fully resolved now, and we dropped some notes on what happened here: Improvements to our public DNS infrastructure
Thanks yall for tracking this one down and for the write up. Very interesting!
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