A nice post about OAB troubleshooting over at http://blogs.msdn.com/dgoldman/archive/2006/08/26/725860.aspx
Author: Ståle Hansen
Send Email Using Telnet
Here is how to send email using Telnet
- Open the cmd prompt.
- Type telnet server.com 25 (where “server.com” is the name of the smtp (outgoing) server of your email provider, such as smtp-server.austin.rr.com). This can be found by checking your account info in the program you normally use for email.
- Type HELO server.com.
- Type MAIL FROM: you@server.com.
- You may get a message saying “250 ok”
- Type RCPT TO: Friend1@anotherserver.com, friend_two@someotherserver.org, friend.3three@Someserver.com, etc.
- again, You may get a message saying “250 ok”
- To write the message, type DATA, followed by your message.
- To end the message, put a period on a new line by itself and press Enter.
- Type QUIT to exit Telnet.
Got this info over at wikihow.com
Delete Failed DCs from Active Directory
Here is a nice knowledge base article about deleting failed DCs from Active Directory over at petri.co.il
FSMO role holders
Trouble finding the correct FSMO role holder or specifically the schema master, check the knowledge base at petri.co.il and this post
Build numbers and release dates for Exchange Server
Use this link to find the correct version of your exchange server
Exchange Remote Connectivity Analyzer
Use the Exchange Remote Connectivity Analyzer to test Activesync connectivity, autodiscover connectivity and other remote features