renew self signed 2k7 cert.

Exchangepedia Blog: Exchange Server 2007: Renewing the self-signed certificate

Some good powershell cmdlets

PointBridge Blogs – Post

Exdiaglog – Killer Tool

MSDN Enhanced Search

set-journalrecipient

The Exchange 2007 Wiki – Set Journal Recipient

Some good commands here

Exchangepedia Blog

powershell tips

Exchange Management Shell Tips of the Day