Issue After replacing a wildcard SSL certificate (*.domain.com) with a basic single-server certificate (webmail.domain.com) remote clients using Microsoft Outlook can no longer connect to their email accounts on an Exchange server using HTTP Proxy Method. Outlook displays below error and then repeatedly prompts for a password: There is a problem with the proxy server’s security […]
There are quite a lot of good step-by-step manuals available describing how to enable Kerberos authentication for Exchange Server 2013/2016. The following issue has been seen in an Exchange 2013 infrastructure (8 server DAG) where Outlook clients use OutlookAnyhwere to connect to Exchange Server. MAPI over Http is disabled on an organizational level due to a […]
I’m in the middle of a migration from Exchange 2010 to Exchange 2013 at the moment. All was going well until I repointed the DNS records to the Exchange 2013 CAS servers. In Exchange 2013 all client connectivity is now made using RPC over HTTPS (a.k.a Outlook Anywhere) unlike Exchange 2010 where only external clients […]
On a recent project I was asked if I could block certain users from seeing the Default Global Address List, these users worked for the client externally sourcing business, they needed to mail on behalf of the client but the client did not want them to be able to see other users on the GAL. […]
To grant a user the permission to send from a distribution group you will need to open Active Directory with the view set to “Advanced” then open the properties of the Distribution group you wish to modify, and select the “Security” tab. Click the “Add…” tab to add the users who will be sending as […]
How to safely flush the Exchange transaction logs without interruption or downtime Recently I had a migration from an Exchange 2007 server to an Exchange 2013 with a network attached LUN for storage. After migrating all the users, over 200 mailboxes, the Logs folder was getting huge. The total space occupied by both the logs […]