Author: Jack M. Off

Found this happening in my new mailcow installation and could reproduce following the steps here https://docs.mailcow.email/post_installation/firststeps-ssl/#lets-encrypt-out-of-the-box to re-run the ACME plugin. Found lots of others complaining about this and recommendations to disable IP and HTTP checks. Don’t do that! Instead fix your NAT reflection rules so that your containers can talk to your external IP […]

Not sure why this is an issue that Ubiquiti has left out there, but if you try and change the static IP address the UniFi controller will puke with the above error. Apparently there are a bunch of different workarounds, but the simplest (to me at least) seems to be logging into the USG directly […]

No idea why Ubiquiti can’t put this into the GUI, but whatever. Thanks to IncrediGeek for the tutorial. https://www.incredigeek.com/home/configure-airos-snmp-settings-over-ssh/ Basic steps:

So recently some Russian cunt(s) started relaying email through my postfix server. I finally figured out I had a check_sender_access in my smtpd_helo_restrictions AND smtpd_sender_restrictions. With entire domains listed spammers found one of the domains to send from and then used my server as an open relay. -Don’t put entire domains in sender_access as OK. […]

In another absolute WTF; if you have a Honda Odyssey, don’t try and run it on a downhill slope. The fuel pump is installed in such a configuration that the reservoir will empty before it actually pumps more gas from the tank. Net result is the car will stall and cannot be started until you […]

Oh FFS. So I’ve been messing around with LibreNMS and trying to setup a NTP server using a PPS signal and have LibreNMS monitor that. Got stumped on the following error: WTF does that mean? Welp, I didn’t have much luck with the ole Goog aside from reading a RFC. Basically the SNMP agent spits […]

Looks like there are 2 main kinds (at least that I have.) One doesn’t give you much to go on the other has lots of test points. This is obviously the latter.

Got tired of recreating a docker line so I could run some linux commands (looking at you Yafuflash) from within the terminal. Didn’t seem like a good use of the Compose either. Apple kills this off after every update, but being able to use Touch ID for sudo instead of a password is Tier S […]

WTF Apple? Why is this shit necessary. Anyway you can just add the below to your crontab and you shouldn’t have the problem anymore. Basically it restarts the iCal daemon every hour.

Proxmox VMs I got tired of interrupting calls from the trouble and strife (and the rest of the family) that something wasn’t working. Seems to normally be weird edge cases between hardware and software and virtualization, but at least once the virtualized Ubuntu 20.04.4 running Plex has died and the OPNsense router died once too. […]