libera/#devuan-dev/ Thursday, 2023-03-09

onefangI wonder if this Debian Janitor would be of any use to us, or do we already do something like that?  https://www.jelmer.uk/kali-janitor.html01:33
rwpIs email.devuan.org suffering?  I am seeing popcon email queued failing to transfer due to timeouts for the last 12 hours.20:22
bb|hcbrwp: There is a new IP, maybe flishing DNS cache would help?21:30
bb|hcb*flushing21:33
rwpbb|hcb, The TTL on the devuan.org addressees is 86400 seconds, a full day!  WOW!  That does seem quite long.22:29
rwpI would recommend something more like 14400, 4 hours, which has always been a good reasonable recommended TTL.22:29
rwpI see that I am still getting the old IP address at a TTL countdown of 32733 seconds now so this would clear up by tomorrow automatically.22:30
rwpIf I probe the nameservers directly then I do see a new IP address for it.  I'll kick things with a named restart.22:31
rwpBut strangely the old IP address is still listening to smtp port 25 and still answering as email.devuan.org which is why I didn't notice an IP change.22:32
rwpObviously for popcon it is not critical information at all but I assume other email goes through there and it might reduce confusion if that were disabled.22:32
rwpJust to close: "service named restart" followed by "postfix flush" and the queued messages were transferred.  Thanks!22:34
bb|hcbrndc flush would be easier, no?22:53
bb|hcbSorry, that was my mistake - we decomissioned one server and didn't notice that VMs running on different hosts were using ips from it...22:56
bb|hcbAbout TTL, I will consider decreasing even further, like 30m - that would be good to have both usable cache and refreshing if the need to renumber something comes again22:58
rwpCoincidentally my main server is changing ISPs tomorrow so new addresses for me.  Tonight I am reducing my TTLs all around in preparation for tomorrow's changes.22:59
rwpI normally use 14400 4-hours but then reduce to 1800, or even 300, if I am planning changes.  Then relax back to 4-hours afterward.23:00
bb|hcbThat is an option if you notice on time. BTW. deb.d.o and CC.deb.d.o have a very low TTL and there is no visible bad effect on the auth DNS servers23:05
rwpDNS is actually a pretty amazingly resilient network distributed database system.23:07
rwpAs long as the TTL isn't too short then computer speed and network speed today is such that it's hard to notice problems.23:07

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