for keeping track of my digital experiments

It turns out that the only problem with my wiring was the heads. I couldn’t use my custom wiring schema for Gigabit Ethernet purposes. I changed the wiring for my Gigabit connections to the TIA/EIA 568B standard. Now the only limitation on my Gigabit speed is the processor and bus speed of my GX240 Optiplex. I’m pulling 170 – 200Mbps out of the thing to my Debian based file server. You might find the following wiring diagrams helpful:

Well the reverse DNS record of this host’s IPv4 address is now up and running. Man, I love the quick support of the Amerihosting folks. The support guy, Douglas Kuntz, got back to me even though it was Sunday! Comcast, just try and block my server’s LEGIT email now! Hehe, Comcast …

Surprising, never knew that Comcast filters out email from IP addresses without PTR records. I mean I am able to setup SPF records, but that’s about it, unless I lease another VPS or dedicated box and setup my own dns servers so I can run domain keys.

Connected to 76.96.62.116 but greeting failed.
Remote host said: 554 IMTA22.westchester.pa.mail.comcast.net comcast 65.254.216.210 Comcast requires that all mail servers must have a PTR record with a valid Reverse DNS entry. Currently your mail server does not fill that requirement. For more information, refer to: http://www.comcast.net/help/faq/index.jsp?faq=SecurityMail_Policy18784
I'm not going to try again; this message has been in the queue too long.

Well that sucks, I just sent off a notice to the Amerihosting guys. I wonder what they’ll think? I nabbed the following off of experts-exchange.com (excerpt from the user called bluetab). (Did you know that if you are using Firefox on experts-exchange.com you don’t have to register or pay? You can just scroll to the bottom and read the answers.)

I used zoneedit to create RDNS records for my IP address block and it worked great. It was just a pain to get it setup.
We created a record in ZoneEdit. The IP block has to be formatted as such: XX.XXX.XXX.XXX-XX where the -XX represents the subnet masks /29 for example. After ZoneEdit assigned us name servers we had to send a request back to ATT (our T1 provider). The email basically told ATT to change the nameservers for our IP block.
“We are requesting a change for reverse DNS zone delegation.
Please change the DNS servers for DSE IP block XX.XXX.XXX.XXX-XX on Circuit ID DHEC-XXXXXX to:
ns12.zoneedit.com
ns14.zoneedit.com”

So it can be done! I just hope it works with a single IPv4 address …