Exchange 2016 setup fail at "Setup\ServerRoles\Common\tr\Microsoft.Exchange.AirSync.Resources.dll"

Issue : On Exchange 2016, setup fails with error with "Setup\ServerRoles\Common\tr\Microsoft.Exchange.AirSync.Resources.dll"

Resolution : 

Re-Extract the Binaries from the Exchange setup and run the setup again

451 4.4.0 dns query failed. the error was dns query failed with error ErrorRetry Exchange 2013

Issue : Exchange 2013, Email stuck in the Queue, error says " 451 4.4.0 dns query failed. the error was dns query failed with error"

Steps
======
get-queue -server "ExchangeHubServerFQDN" | FL Identity, Status, MessageCount, LastError 

Get-TransportServer –Identity 2007Server | FL

Get-TransportServer –Identity 2007Server | FL “External*”,”Internal*”

Resolution -------------------- Set-TransportServer –Identity 2007Server –ExternalDNSServers $null
et-TransportServer 2007Server –InternalDNSAdapterGuid 00000000-0000-0000-0000-000000000000


1. Once in EAC/ECP, navigate to Servers and open the server properties.
2. Click on DNS Lookups.
3. Make sure the Internal and External DNS lookups are set correctly.  The internal and External DNS settings need to match DNS setting on the network card IP configuration. Type the current DNS settings or leave it blank. Blank forces Exchange transport service to use network card DNS setting

 Use get-transportserver "ExchangeserverFQDN" | FL *DNS* to verify your settings.
2. You want to use the set-transportserver command to set it back to all network adapters or change the custom IP Range.

For Example:  You may wish to change the Internal DNS to use all network adapters and not custom by running:
set-transportserver "ExchangeserverFQDN" -InternalDNSProtocolOption Any

OR type the following to set it to Null

Set-transportserver "ExchangeserverFQDN" -InternalDNSServers $null

This CA Root certificate is not trusted because it is not in the Trusted Root Certification Authorities store "Exchange 2013"

Issue : When users is connected from Internal network, Browser show certificate prompt, but connecting from External Network, No certificate error in the browser.

Resolution: Check the certificate in the Server which his browser is hitting, found Certificate is not installed. Import certificate from the Legacy server to the new server or the new server, resolved the issue.

Email flow testing Script

Exchange 2013
===========
Email flow testing Script


from Exchange Management Shell
=========================
1..10 | % { Send-MailMessage -To recipient@destination.local -From fromuser@anydomain.com -SmtpServer CASservername -Subject "Test Message $_" -Body "This is the body of Message $_" ; write-host “Sending Message $_”}

Set public folder to accept NDR

1.      Locate user A’s distinguishedName

Get-User “User A” | Fl DistinguishedName

2.      Launch ADSI Editor, go to “CN=Microsoft Exchange System Objects”, right-click the PF1 object, and then go to “Properties”

Notes: PF1 must be mail-enabled

3.      In the “Attribute Editor” tab, locate “publicDelegates” attribute, and then copy user A’s DistinguishedName into it

from 

https://social.technet.microsoft.com/Forums/office/en-US/d341ff3f-9a8c-40c7-ab04-0a1655047041/public-folder-not-accepting-ndr?forum=exchangesvrgenerallegacy

Exchange 2010: Public folder GUID

One of the Event in the Application log in Exchange 2010 is showing the following event 

Event id : 2028
The Delivery of a Message sent by Public Folder E0FG2CADACE66846A98A6C130CA3ER97-0000FA965FG85
has failed.\r\n To:first name, Last name\r\nCc:\r\n The Non-Delivery report has been deleted


Steps
---------
Getting which public folder is in picture finding is difficult here. 
so if you had tried this then it will not work and through's error

c:\>Get-MailPublicFolder -id E0FG2CADACE66846A98A6C130CA3ER97-0000FA965FG85 

is not showing proper error and message shows it couldn't be found



so instead of running the command using the whole Hexa-Decimal value, use the value before dash ( - ) so here in this example "E0FG2CADACE66846A98A6C130CA3ER97-0000FA965FG85"  we are going to use E0FG2CADACE66846A98A6C130CA3ER97 and to convert this value into proper GUID use the following command from Exchange management shell



c:\>[system.Guid] 'E0FG2CADACE66846A98A6C130CA3ER97'
Guid
--------
E0FG2cad-ace6-6846-a98a-6c130CA3ER97

and finally the command for getting public folder is 
c:\Get-MailPublicFolder -identity E0FG2cad-ace6-6846-a98a-6c130CA3ER97

or 
c:\Get-MailPublicFolder | Where {$_.LegacyExchangeDN -Match "E0FG2cad-ace6-6846-a98a-6c130CA3ER97"}



or using with complete GUID then you can use below command

[PS] C:\Windows\system32>Get-MailPublicFolder -resultsize unlimited | where {$_.Externalemailaddress -match "0ED914CAB4DA1243948B9AD6B0B27FDE-000000000014"}


Or to reveal the name of the public folder use the below command
[PS] C:\Windows\system32>Get-MailPublicFolder -resultsize unlimited | where {$_.Externalemailaddress -match "0ED914CAB4DA1243948B9AD6B0B27FDE-000000000014"} | Get-PublicFolder 

PS: Guid used here is only for illustration purpose only.

THANKS RAVI

If you encounter low disk space issues, you can perform the following actions to correct the issue: Exchange 2010

If you encounter low disk space issues, you can perform the following actions to correct the issue:

• Delete content from mailboxes. Specifically, you can delete messages from the Deleted Items and Sent Items folders.
• Purge items from the Recoverable Items folder. For details, see Clean Up the Recoverable Items Folder.
• Run database maintenance. For details, see Maintain Mailbox Databases.
• Purge transaction logs. For details, see Understanding High Availability Factors.
• Enable circular logging. For details, see Configure Mailbox Database Properties.
• Change the database path to a hard disk drive that has more space. For details, see Move the Mailbox Database Path for a Mailbox Database Copy.

from : https://technet.microsoft.com/en-us/library/bb331958(v=exchg.141).aspx