Useful Sysadmin Tools:
To identify your PC Public IP address click link
http://www.whatismyip.org/
Or
http://checkip.dyndns.com
IP Checks
Whois, Reverse PTR And Location Lookup:
http://www.ipchecking.com/
Mail Server
And IP Blacklist Check:
http://www.mxtoolbox.com/
Spamhaus IP
Blacklist Check:
http://www.spamhaus.org/
DNSBL Check IP
Spam Database Lookup:
http://www.dnsbl.info/
SORBS Spam And
Open Relay Blocking System:
http://www.sorbs.net/
DNS And Mail
Server Health Report Check:
http://www.intodns.com/
Broadband
Internet Speed Test Sites:
Visit Speedtest.net to test the speed of your
broadband Internet connection
Visit Speedtester at BT.com
BT Network Status -
BT Fault Tracking And Repair
Demon Network Status
Easynet Network Status
TalkTalk Business Network Status
Virgin Network Status
-
Virgin Tools -
100mb Broadband