Category: Exchange server

Microsoft now actively publishes backdoors found for the Exchange server breach, see the security blog here You can download a csv file with the known filepaths, which are very easy first step to verify here Below is a very quick first response program to use that file, and scan if a known backdoor is present […]

If you are fed up with your daily advertising banner in the desktop version of outlook pushing you to the mobile app version, here is the page detailing how to remove it. How to remove the Get and set up Outlook Mobile app on my phone option from Outlook OF COURSE you should not have […]

The default installation of exchange 2010 on small organizations will use the hub transport server to handle the smtp mail. The problem with this setup is twofold, Exchange 2010 STILL uses stone gae defaults for NDR messages, and for unknown recipients by accepting any mail and then sending non deliverable reports. This opens up your […]

The default installation of exchange 2010 on small organizations will use the hub transport server to handle the smtp mail. The problem with this setup is twofold, Exchange 2010 STILL uses stone gae defaults for NDR messages, and for unknown recipients by accepting any mail and then sending non deliverable reports. This opens up your […]

re-creating the default receive connectors on exchange 2013 I recently ran into a server that no longer wanted to route mail and responded with PRX4 and PRX5 temporary server errors after a failed upgrade with the latest CU. These errors are attributed to dns problems, however in this case DNS was fine. Even after restoring […]

Expand the organization configuration Expand hub transport Choose the tab Send Connectors Create a new send connector, with the intended use: Internet Add as address space: * Finalize the wizard SMTP mail on the server, take the following steps: Expand Server Configuration Select Hub Transport Bring up the propterties of the default receive connector Add […]

If you still need to support old fashioned POP connections over port 110, you need to make the following configuration steps: Expand Server configuration Select Client Access Bring up the properties page for the POP3 connector Switch to the Authentication tabs Enable planin text logon Enable the POP3 service in the services panel, and set […]

MS Exchanges store process by default uses all memory on the server and releases memory when other process require it. There is much discussion floating around about the good and the bad of this. Very generaly speaking it is a good thing if you have dedicated exchange servers, but it can be a very bad […]

Expand the organization configuration Expand the HUB Transport role Configure the tab “Accepted domains”

By default, your Exchange 2003 server will happily accept all mail, only to find during processing that it can not deliver certain mails. It will ony then generate a message back to the sender that the mail cannot be delivered. While this is fine for legit senders, it becomes problematic with spam. Spam generaly has […]