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Re: Email notifications fail ?
Reviving again…
Since yesterday, again no forum notifications in my inbox. The last one was a notification for the post by user “planeth” in the ‘Alpha & beta testers request: Textpattern IRC^H Matrix server’ thread. Timestamp 2021-04-07 22:26:53 JST.
Where is that emoji for a solar powered submarine when you need it ?
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Re: Email notifications fail ?
Ugh. OK, I’ll have a look. Please hold.
Edit: 30+ emails in the queue with (Host or domain name not found. Name service error for name=example.com type=MX: Host not found, try again) error. Nothing changed in the last week or more, so not sure what’s happening there. Leave it with me, expect emails to start flowing soon.
Last edited by gaekwad (2021-04-09 13:04:04)
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Re: Email notifications fail ?
Fixed. This happened (out of nowhere): askubuntu.com/questions/1292650/resolv-conf-no-dns-servers-known
I’ve tweaked settings and updated my build guide to pre-emptively set known-good DNS, which should hopefully avoid this in future.
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Re: Email notifications fail ?
gaekwad wrote #329743:
Ugh. OK, I’ll have a look. Please hold.
gaekwad wrote #329745:
Fixed. […]
OK, the six or so email I could expect arrived nicely, together. Thanks for keeping up with that.
Where is that emoji for a solar powered submarine when you need it ?
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Re: Email notifications fail ?
phiw13 wrote #329747:
OK, the six or so email I could expect arrived nicely, together.
Great news, thanks for letting me know. There were ~35 emails all processed at the same time, the queue is now back to zero. It’s not an error I’ve encountered before, but I’m going through our servers now to check they’re OK.
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Re: Email notifications fail ?
gaekwad wrote #329748:
Great news, thanks for letting me know.
… and the notification for that post arrived instantly. We are probably good for a while :–)
Where is that emoji for a solar powered submarine when you need it ?
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Re: Email notifications fail ?
phiw13 wrote #329749:
… and the notification for that post arrived instantly. We are probably good for a while :–)
Let’s hope so! The way our servers work is they use themselves for DNS lookups, and the upstream DNS defaults to (and is operated by) DigitalOcean. For whatever reason, that upstream seemed to break and the resolution went south.
From here, I’ve hard-coded IPv4 and IPv6 for Cloudflare and Quad9 instead of relying on provider DNS:
$ cat /etc/systemd/resolved.conf
[Resolve]
DNS=1.1.1.1 9.9.9.9 2606:4700:4700::1111 2620:fe::fe…and so unless the hot mess intricacies of systemd breaks it, we’ve got it sorted it from here.
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Re: Email notifications fail ?
Redux, march 2023, the issue returns [*] :-(
Since Wednesday (08/03) I haven’t again received any email notification for updated threads. Same email address as before.
–^–
[*] sounds like a Disney/star wars joint venture
Where is that emoji for a solar powered submarine when you need it ?
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Re: Email notifications fail ?
phiw13 wrote #334999:
Since Wednesday (08/03) I haven’t again received any email notification for updated threads. Same email address as before.
Weird. No email queued this side:
$ sudo mailq
Mail queue is emptyIt’s Apple (iCloud) filtering, according to /var/log/mail.log:
Mar 9 11:26:26 tarzan postfix/smtp[64294]: 6AC6E1F81ED: to=<REDACTED@me.com>, relay=mx01.mail.icloud.com[17.57.154.33]:25, delay=2.4, delays=0.02/0.07/0.97/1.4, dsn=5.7.1, status=bounced (host mx01.mail.icloud.com[17.57.154.33] said: 554 5.7.1 [HM08] Message rejected due to local policy. Please visit https://support.apple.com/en-us/HT204137 (in reply to end of DATA command))So, it might be a blocklist somewhere…let’s see:
Hostname: tarzan
IPv4: 164.92.219.167
mxtoolbox.com: https://is.gd/wFVzfk
anti-abuse.org: https://is.gd/GbQYyP
Spamhaus: https://is.gd/I649Zf
IPv6: 2a03:b0c0:2:d0::13c8:a001
mxtoolbox.com: https://is.gd/TQBGbS
Spamhaus: https://is.gd/MNTxZF…and, sure enough, the IPv6 address is on a shared net block with a mischief-maker:
check.spamhaus.org/listed/?searchterm=2a03:b0c0:2:d0::13c8:a001
We have evidence that suggests that 2a03:b0c0:2:d0::/64 or something sharing a connection with it is insecure, compromised, or infected. This can also be caused by a misconfiguration. Please check both.
The most recent detection was on: March 6 2023, 22:10:00 UTC (+/- 5 minutes)
So, it looks like something in that /64 block (from a potential of 18,446,744,073,709,551,616 IP addresses available) has done something naughty.
At this point, there’s not much I can do – our server is shipshape, maintained, and NOT chucking out spam, so all I can suggest is sit tight for a week or two until I can build out our new 2023-grade servers and see what happens in that IP space.
Edit: PS – thank you for the report.
Last edited by gaekwad (2023-03-10 08:43:13)
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Re: Email notifications fail ?
Thanks for checking… don’t worry too hard about me in this case.
Where is that emoji for a solar powered submarine when you need it ?
Sand space – admin theme for Textpattern
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Re: Email notifications fail ?
I’ve changed some forum stuff and there’s a non-zero chance it will affect delivery to Apple-hosted email (as is now traditional).
@phiw13: please let me know if you’re seeing this and not getting the expected email(s) alerting you to replies. Thank you.
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Re: Email notifications fail ?
I did indeed receive an email notification.
But the email client (Apple Mail, MacOS 14.2) treated them as junk :-) That has happened for a few forum threads recently, before the latest server changes.
Thing is, after the last glitch, I changed my email address (and for added fun, I forwarded it to iCloud Mail ) – that solved the issue at the time.
Might changed it again next to my iCloud address and see what happens.
Where is that emoji for a solar powered submarine when you need it ?
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