A Drink of Technology for the Thirsty Mind
By default, Exchange 2010 doesn’t allow sending automatic forwards, replies and Out of Office Assistant Messages (OOF) to external email addresses. This is mainly for security and performance reasons, as it ensures there can’t be any mail loops or that Exchange doesn’t automatically reply to any spam messages. With this in mind, you may need to enable this as a […]
Read moreBy 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 to use the group you will need to disable the ‘Require that all senders are authenticated’ option. Please note, this may open your server and users to unwanted spam. You […]
Read moreWhether 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 critical administrative tasks for admins of any system is patching. With new vulnerabilities announced every week, and with dozens, if not hundreds of different applications running on your network, having […]
Read moreI 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 disabled the Exchange Mailbox, cleaned up the Databases to make the mailbox appear in the Detached Mailboxes folder using the following Exchange Management Shell command: get-mailboxdatabase | clean-mailboxdatabase […]
Read moreThe 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 Exchange Server have been engineered to provide large mailboxes without requiring expensive, high performance storage subsystems to store it all. All of that does not mean that you should remove […]
Read moreEmail 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 measures we can put in place to protect our own servers from spam, we also need to consider how to prevent spammers from spoofing (imitating) the domain names for our […]
Read moreIf you are unable to remote desktop into a server using the computer name, but you are able to remote into the server using the IP address and you get the error message below. Make sure the date/time is in sync between your DNS server and the host server you are trying to remote […]
Read moreWindows open cmd as administrator run: ipconfig /all find /i “DHCP Server” Linux the DHCP server is usually located in the dhclient.leases file run: cat /var/lib/dhcp3/dhclient.leases or: grep dhcp-server-identifier /var/lib/dhcp3/dhclient.leases and look for: “optin dhcp-server-identifier ” Mac Open Terminal Run: ipconfig getpacket en0 (en0 is typically the ethernet adapter. Wifi is usually en1 or en2) The “Server_identifier (ip): ” […]
Read moreWhen deleting a mailbox from Microsoft Exchange Server, the following error is sometimes displayed, especially if the user has been an Exchange Administrator: Microsoft Exchange Error – Action Remove could not be performed on object ‘User’ Error: Active Directory operation Failed on User. This error is not retriable. Additional inFormation: Access is denied. Active directory response: 00000005: SecErr: , problem […]
Read moreWhen trying to open MS SQL Server Configuration Manager, a dialog may appear.. Cannot connect to WMI provider. You do not have permission or the server is unreachable. Note that you can only manage SQL Server 2005 and later servers with SQL Server Configuration Manager. Invalid class [0x80041010] This is caused by an issue with the compiled SQL Configuration […]
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