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Inside The Box

MaxMind GeoLite v1 databases discontinued - install GeoLite2

I noticed recently that a few web sites are miscategorising my ISP's static IP as being in the wrong country. I knew it was a recent reallocation of a new block and suspected the web sites were using a stale version of a GeoIP database - probably MaxMind's GeoLite v1 offering. However, as I also run a few servers which […]

Getting Postfix working for outbound emails via SMTP and local relay for cron reports

I recently had to diagnose a couple of servers running Postfix which emailed results of rsync cronjobs when they returned a non-OK value. While Postfix was emailing the recipients on rsync failure, I noticed that the cronjob STDOUT was not being locally relayed correctly to the root mail. I documented my fix on ServerFault, hopefully it's useful for someone else. […]

Tiplet: DO NOT USE the # symbol in Oracle Enterprise Communication Broker passwords!

I've been working with Oracle Session Border Controllers and Enterprise Communications Brokers a lot recently, A couple of weeks ago I encountered what I think is a new - and quite serious - bug (it's with Oracle for investigation) regarding how the devices *mis*handle special characters. If you admin ECBs or SBCs and are planning to change their credentials to include non-alphanumeric characters, read this first.

Updating jwhois on CentOS to solve v6nic errors

I use fail2ban on my servers, and I noticed whois queries to were running into problems. If you're having the same problems, here's how to fix them.

Replacing a FiiO E7 battery - simple! (Photos)

I've had a FiiO E7 headphone amp for a few years and it's recently gained a new lease of life -- as an audio interface! However, the OEM battery got a bit long in the tooth, so I set about replacing it. It's much easier than you might think. Click through for photos and step-by-step instructions, plus a list of components to buy. (Warning: magnifying glass and hot glue gun are advantageous!)

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