Brain Goo

If you have WordPress installed you may run in to an error that constantly prints something like this:
Warning: Unknown: Releasing SysV semaphore id 58 key 0×152b in request cleanup in Unknown on line 0

This is not an error from WordPress, but from the WP Super Cache Plugin you forgot you installed. The error [...]

[Read more →]

Denying connections based on RBLs is a snap with Exim4. Most confusion is related to ACLs and where the definition sits.
The fastest way to deny based on RBL is to add it to whatever ACL you specify in acl_smtp_rcpt
However, you MUST put the declaration AFTER any relay allow definitions. ACLs are based on [...]

[Read more →]

It’s easy to set up a shared calendar system with free software that scales well for a few users (great for a home network) and has tons of support from third parties.
What you need:

iCal client like Sunbird or Lightning from Mozilla
Apache web server with WebDav installed

How to do it:

Install WebDav and password protect a public [...]

[Read more →]