Exchange – Are you an Open Relay?
KB ID 0000087 Problem When Email was a new medium, pretty much all mail servers were open relays, and nobody really cared, after all if someone in Nigeria wanted to relay mail through a college server in Manchester then why shouldn’t they? Sadly with the explosion of Email and internet use this is no longer an option, because all those annoying Emails you get for Viagra or insider stock tips have probably been sent to you...
Exchange – New User(s) Not Showing Up On Global Address List
KB ID 0000775 Problem If you create a new user, give them a mailbox, and they seemingly fail to appear then don’t panic! Firstly and fore mostly: If you do anything in Exchange: Apply the “cup of coffee rule”, never make a change then go and prove that change works straight away! check it later. However most of us work in the real world and you have a user who needs to use this mailbox yesterday! Bear in mind, the process...
Migration From Exchange 2010 to Exchange 2016 (& 2013)
Part 1 KB ID 0000788 Problem To complete a migration from Exchange 2010 (or 2007) to Exchange 2016/2013, you need to introduce Exchange 2016 into your existing Exchange environment, then migrate your content onto the new server(s), and finally remove Exchange 2010. Solution Assumptions: In this example I’ve got an existing Exchange 2010 environment running on Windows Server 2008 R2. I’m putting in Exchange 2016 onto a new...
Migrate Exchange 2010 to Exchange 2016 (& 2013)
Part 3 Migrating Certificates and Decommissioning Exchange 2010 KB ID 0000816 Problem Continued from Migration From Exchange 2010 to Exchange 2016 Part 2 Solution Exchange 2013/2016 Migration Step 8 Migrating Certificates from 2010 to 2016 Only consider doing this if you have a purchased (i.e. NOT using a self signed) certificate on your Exchange 2010 server. Bear in mind if you have the internal FQDN of your Exchange 2010 server as a...
Exchange – Change OWA Login to Username Only
KB ID 0000861 Problem The procedure for changing the user login process from domainnameusername to just username, is a little different with Exchange 2013. Solution 1. Connect to the Exchange admin center > Servers > Virtual Directories > Select OWA > Edit. 2. Authentication > Select ‘User name only’ > Browse and select the domain > Save. 3. At the warning click OK > Windows Key+R > cmd {enter}...
Exchange 2019, 2016, 2013 – Allowing a Host/IP to Relay Mail
KB ID 0000891 Problem There a a few more hoops to jump through to allow a host to relay though Exchange 2013. For earlier versions of Exchange see the links below. Allow Relay from an IP With Office 365 (Exchange Online) Allow Relay from an IP with Exchange 2010 Allow Relay from an IP with Exchange 2007 Allow Relay from an IP with Exchange 2003 Allow Relay from an IP with Exchange 2000 Solution How to create a ‘Relay’...
Exchange – NDR – Undeliverable – Backscatter
KB ID 0000047 Problem If you look on your Exchange “Queue Viewer” you may see A LOT of “Undeliverable” Massages that are NDR’s (Non Delivery reports) that your server is sending, this happens because the server receives a message for something like this-address-is-not-real@your-domain.com and it sends an NDR Back. Solution You can simply turn off NDR’s In the Exchange Management Console >...
Exchange – Export Distribution Groups AND Members to a file
KB ID 0000209 Problem Yes you can use the Powershell commands, Get-DistributionGroupMember –identity “group name” | ft name, primarysmtpaddress But you have to do that for every group and I’ve tried Piping the Get-DistributionGroup in there but it does not seem to want to work 🙁 Solution 1. Download this script and extract it to the root of the Exchange servers C: drive. 2. On the Exchange server > Click > Start > All...
Event ID 3154 ‘Active Manager Failed To Mount Database’
KB ID 0000867 Problem Seen on an Exchange server, in my case I got one for the mailbox database, immediately followed by one for the public folder database. Active Manager failed to mount database MailStore 01 on server {Server-name}. Error: An Active Manager operation failed with a transient error. Please retry the operation. Error: Database action failed with transient error. Error: A transient error occurred during a database...
Cisco ASA – Only Allow Mail Servers SMTP Outbound
KB ID 0000172 Problem It’s not unusual for nasty Virus’s and Malware once they have infected a machine, to set up outbound communications on the mail protocol SMTP (TCP Port 25), which can lead to your public address being blacklisted. So it’s considered good practice to stop all your clients getting mail access outbound through your firewall, while still allowing your mail server. Note: On Cisco firewall’s,...