Software

I suddenly noticed issues with Postfix not accepting e-mails that are tagged (“user+TAG@fqdn”) anymore. Even though it always had.

Postfix main.cfg:

recipient_delimiter = +

Log snippet:

Apr 16 13:07:52 vm-dns-mail postfix/pipe[6119]: 55D1C2005E4: to=<user+test@rootspirit.com>, 
relay=maildrop, delay=0.06, delays=0.01/0/0/0.05, dsn=5.1.1, status=bounced 
(user unknown. Command output: Invalid user specified. )

Tried to find what’s wrong in MySQL, change the delimiter, Debug Maildrop, etc. Not much progress… :( And after 6 hours I was starting to get annoyed.

Explained this way, it’s quite simple. ;)

This.

Used my Raspberry Pi, with an USB disk as TimeMachine. Another disk as NAS/storage. It’s just quite slow… Not sure whether it’s my WiFi or RPi that can’t keep up.

But for now, it’s working.

For a few years I ran my own public DNS server. I liked it, great experience, I could easily connect all my host to a central and fast DNS, I avoided all those nasty ISPs who filter their DNS, and it was fast (not Google fast, but fast – I actually think Google DNS didn’t even launch when I set it up).

A good year or so, they started using the DNS server to DDoS others (spoofed UDP DNS requests). That’s annoying… It hit like 5k or so requests per minute… That wasn’t really fine, but I didn’t care much until I saw the traffic it ended up generating… Then I started to null route most IPs sending bogus DNS requests (spamming ripe.net or isc.org)… That usually worked, and for a whole time I didn’t get any more DDoS… Until, apparently, recently.

Can be found here.

For no clear reason, OpenVPN on Mac with Tunnelblick (any version, had this problem for a few years already) results in these kind of error messages (and refuses to connect):

2013-02-05 17:44:31 write UDPv4: Can't assign requested address (code=49)
2013-02-05 17:44:33 write UDPv4: Can't assign requested address (code=49)

This seems to appear more often when swapping WiFi/IP range (after my Mac goes into sleep). But also happens when connecting to the same WiFi. It doesn’t change anything whether I disconnect OpenVPN before putting the Mac to sleep.

Due to continuous Access errors, I decided to reinstall Office Professional 2010 (64 bit).

As I couldn’t find the original CD key I installed it with, I used another one from another installation. So far so good, installation went fine, etc.

Once I started any Office app, it popped up this error: “Microsoft Office professional plus 2010 cannot verify the license. blablabla useless crap check control panel”

I’ve tried:

• Reenter CD key (via setup)
• Repair Office
• Install every single item I could select during the install
• Remove office + reinstall office
• Removed CD key with this
• Reboot over a zillion times
• Cursed

However, this seems to fix it for me:

I lolled.

I now own three Raspberry Pi’s.

Using two of them (and my Guruplug as WiFi AP) I connected my new apartment with my old house (= parents) over VPN.

This way I can access the printers/scanners and NAS at home.

The 2 rPI’s are used as router (using a Macbook Air USB-to-Ethernet adapter as 2nd ethernet (eth1) port). Basic howto’s are easily found using Google to do this (a good starting point).