With the little PowerShell script described here, you can quickly add an email address to your Exchange Online account in Office 365. This allows you to easily create throwaway email addresses. Note that the script requires PowerShell 3.0.
In general, we always try and keep our mail servers as secure as possible, and only allow relaying to trusted/authenticated users. This is in order to avoid our servers being used for spamming and subsequently blacklisted, which can cause delivery issues and headaches if it happens. However, there are occasional scenarios, where we may need to allow a trusted systems with certain IP address to be able to relay via our Exchange server without authentication:
This post explains what happens once Outlook connects to the Exchange Client Access Server (CAS), how it accesses mailboxes and the Address Book service, and how it connects to internal URLs like Out of Office (OOF), Offline Address Book (OAB), and the Availability service.
NetWrix Non-owner Mailbox Access Reporter for Exchange is a simple auditing tool that detects and reports on who accessed which mailbox, when and what was done and who attempted to gain access on other user’s mailboxes.
Jetstress is an important Exchange tool that should be run on all Mailbox Role servers before Exchange is installed. Proper tuning of Jetstress will help you determine maximum disk subsystem throughput performance.