Postfix – Change The ‘Welcome Banner’
KB ID 0000907 Problem After my recent DNS troubles, I was checking my mail server’s (MX) records, and got a warning about not having any reverse lookup records (PTR) configured properly. I telnetted to the mail server on port 25, and saw it was responding with the servers host-name. I know my records are correct for the FQDN of the server, I just needed to change its welcome banner. Solution Change the Postfix Welcome Banner by...
Dell Inspiron 1525 – Bluetooth Problem
KB ID 0000402 Problem I promised to take a quick look at one of my mum’s friends laptops the other evening, the brief was; they had a problem opening office attachments, and their wireless mouse was’nt working. I assumed they needed the document conversion pack and probably had a flat battery, so I downloaded the update, and slung some batteries in my laptop bag. The attachment problem was sorted (by re-installing office...
Lenovo ThinkPad – ‘Where is the Pause/Break Key?’
KB ID 0000930 Problem Much as I like my new S531 work ThinkPad, I thought after discovering it had no serial port, no RGB monitor port, and the worst touch-pad in the entire history of input devices (I now carry a mouse it’s so bad!), that my bad experiences were over. That was until I needed to reset a password on a Cisco Router, and needed to send a ‘Break’ keystroke. There is no pause break key? Solution Initially...
IP (v4) Networking Crib Sheet
KB ID 0000832 Problem You would think by now I would have committed a lot of this to memory, but seeing as I always have to visit my own Subnet Calculator, I thought it was about time I had a ‘handy reference’. Feel free to copy and print it off. Solution Click for larger image. Related Articles, References, Credits, or External Links Online Subnet Calculator IPv4 and IPv6
BT Domains Center – Setup Your Mail Server DNS Records
KB ID 0000900 Problem If you are used to setting up DNS records, then the BT Web Portal (btdomainmanager.com) can be a little confusing. I was stuck yesterday, luckily I had another client I could get to check their records for me. Solution In the example below I’ve got two IP addresses to which I want mail delivering to, 123.123.123.123 and 123.123.123.125, (yours may be on completely different ranges, that’s OK.) In addition...