Daniel Colquitt
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daniel.colquitt.xyz
Daniel Colquitt
@daniel.colquitt.xyz
A very applied mathematician.

Professor & Head of the Department of Mathematical Sciences @ University of Liverpool.

Views are my own &c.

Header: https://unsplash.com/@brucebmax

[ Mostly cross-posting from mastodon 🐘 https://colquitt.xyz/@daniel ]
Pinned
I don’t spend much time on @bsky.app & mainly cross-post from Mastodon 🐘. But, if you follow @ap.brid.gy, you can bridge your account & let people (like me) follow you from the fediverse, which is very cool.
Bridgy Fed
fed.brid.gy
RE: https://c.im/@ojs/115878622074130369

It’s turtles all the way down… 🐢
Ólafur Jens Sigurðsson (@[email protected])
A quote of a quote?
c.im
January 11, 2026 at 9:52 PM
I was looking forward to a lazy Saturday afternoon after my first week back at work. Unfortunately, my youngest had other ideas and has given me a DIY project. #FatherOfDaughers
January 10, 2026 at 12:16 PM
On to the final instalment … the Last Battle commences! ⚔️🛡️
https://app.thestorygraph.com/reviews/74142320-f94d-48df-abff-06adaa8e8ae9
January 4, 2026 at 12:09 PM
Proper snow ❄️ ⛄️

Video: https://colquitt.xyz/@daniel/115836280513541704
January 4, 2026 at 10:09 AM
Today's task is migrating my email server database. Wish me luck ...
January 2, 2026 at 9:51 AM
Anyone in the #selfhosting #email community willing to help me perform a deliverability tests for my #selfhosted mail server?

I’m looking for those running their own infrastructure and/or anyone with a big provider account (Gmail, iCloud, Yahoo, Outlook, Proton, Fastmail).
December 27, 2025 at 7:27 PM
Uh oh … I woke up to a huge Cyanobacteria outbreak in my #aquarium yesterday, so it’s time for a blackout. Luckily, we’ve got plenty of cardboard leftover from Christmas. Wish me luck! 🐠🐌🦐🌊 :jow: :seas:
December 27, 2025 at 1:39 PM
December 26, 2025 at 8:51 PM
Cards written 🖋️, presents wrapped 🎁, old fashioned in hand 🥃 … Christmas may now begin.

Video: https://colquitt.xyz/@daniel/115771016946509885
December 23, 2025 at 9:32 PM
It’s day 2 of my Christmas vacation and I’ve cleaned the garage, rotated my S/MIME certs, and rewrote some of my sieve filters and hacks bash scripts as milters using pymilter, which has sped up my SMTP transaction by a factor of 10 🎉 #sysadmin #selfhosted #email
December 23, 2025 at 4:05 PM
I *think* that I’ve finally got postfix setup the way I want it. At least until I find a new option to tinker with … #selfhost
December 21, 2025 at 4:46 PM
Day two of “I finished for Christmas on Friday, but I’ll spend an extra day tomorrow clearing my inbox & Todo list before finishing properly…”

… maybe I’ll do it tomorrow …

Video: https://colquitt.xyz/@daniel/115757914977208672
December 21, 2025 at 2:04 PM
I have now firmly entered the “That sounds like a 2026 problem to me” phase of the year.

Video: https://colquitt.xyz/@daniel/115719921597136262
December 14, 2025 at 9:00 PM
‘Tis the season of primary school nativities 🕴️👶⭐️🫏✝️

Video: https://colquitt.xyz/@daniel/115699953699699108
December 11, 2025 at 8:23 AM
Just to check my sanity: there is no danger to running `tootctl accounts cull`, right?
#mastoadmin
December 6, 2025 at 8:11 PM
It looks like the transition worked. Let’s see if renewal is success in three days time. I’ve also transitioned one of my backup mail servers to a short-lived cert … 🤞 #selfhosting
December 4, 2025 at 7:11 PM
I am delighted that this news is finally public and thrilled that Pure Maths at the University of Liverpool is part of this programme.
December 1, 2025 at 12:10 PM
It seems that hanging the outdoor Christmas lights has, once again, broken me.

Video: https://colquitt.xyz/@daniel/115640128412784434
November 30, 2025 at 6:46 PM
November 27, 2025 at 10:55 PM