Postfix local mail forwarding loop
OK, somebody did something foolish and forwarded mail to themselves. So now postfix sees a mail forwarding loop and your deferred queue is full of… Read More »Postfix local mail forwarding loop
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Self-healing an OpenProject 503 Upgrade Error
If you have OpenProject set to auto-update, you may come in in the morning to a 503 error. For some reason the upgrade scripts don’t… Read More »Self-healing an OpenProject 503 Upgrade Error
Virtualhosting MediaWiki on Debian Bullseye (11)
If you want to use the maintained Debian MediaWiki package, it’s going to be 1.3.5 and it really wants to be in your.example.com/mediawiki without a… Read More »Virtualhosting MediaWiki on Debian Bullseye (11)
Running LineageOS update-payload-extractor on Debian 11
When you need to extract a LineageOS system image, you need its update-payload-extractor script, which is written in Python2. Debian 11 is a bit hostile… Read More »Running LineageOS update-payload-extractor on Debian 11
Undead IE Vulnerabilities Coming?
As we parse the tortured Microsoft press release, Internet Explorer will automatically be uninstalled when you next update (on Patch Tuesday?) Of special note, if… Read More »Undead IE Vulnerabilities Coming?
Recovering from an OpenWRT “Upgrade”
Be careful not to try to do an OpenWRT upgrade from an old major version to a new major version. You’ll see exec format errors… Read More »Recovering from an OpenWRT “Upgrade”
Debian Bullseye netinst iso for serial
For some reason, Debian seems to refuse to ship an netinst ISO image that can do serial output. This seems to have been causing people… Read More »Debian Bullseye netinst iso for serial
Sympa – “cookie parameter has changed”
Perhaps you’ve just moved your Sympa list manager to another machine and you’re seeing a dreadful message in your syslog that looks like: Oh, Lordy,… Read More »Sympa – “cookie parameter has changed”
Quick & Dirty Drovorub Detection
By all means read the full vulnerability report from the NSA. It has proper forensic analysis techniques and Snort rules. However, if you just want… Read More »Quick & Dirty Drovorub Detection