Enterprise Operating Systems

Troubleshooting and Guides for: Microsoft Server, Linux, and VMware

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Dell Hardware/Software Guides

Dell Servers – PowerEdge, Blades, and Cloud
integrated Dell Remote Access Controller (iDrac)
OpenMange Server Administrator (OMSA)

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Scripting Guides

PowerShell, Bash, JSON, and Python Scripting Guides

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Exchange 2010 – Allow external senders to use distribution list

crtechtipsFeb 17, 20161 min read

By default when you create a distribution group (also known as a distribution list) external email addresses are unable to send emails to the group. To allow external email addresses …

6 Tips for a Successful Patching Process

crtechtipsFeb 17, 20163 min read

  Whether your servers run Windows or Linux, whether your workstations are Windows 7 or Macs, and no matter what vendor your network gear comes from, one of the most …

Exchange 2010 – Cannot login after mailbox has been disabled and attached to different AD user account

crtechtipsFeb 16, 20162 min read

I was asked to rename an Exchange account (sitting on an Exchange 2010 SP2 server) for a customer today because the surname had changed so to do this tidily, I …

Exchange Best Practices: Mailbox Storage Quotas

crtechtipsFeb 12, 20163 min read

The trend for Exchange Server in recent years is towards larger mailboxes. Email is a heavily used application, users are demanding more storage for their email, and current versions of …

A Sender Policy Framework (SPF) Primer for Exchange Administrators

crtechtipsFeb 12, 20167 min read

Email spam continues to be a huge problem for organizations these days, and it usually falls on the Exchange administrator to do something about it. Aside from the usual anti-spam …