Office 365 exchange routing methods

follow the link below to understand how to route mails from office 365 to other mail server like smarthost etc. using CONNECTORS

https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/use-connectors-to-configure-mail-flow/set-up-connectors-to-route-mail

 

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How to repair Exchange 2010 database edb file

Exchange 2010 unmount database repair procedure:

https://www.nucleustechnologies.com/how-to/resolve-exchange-error-unable-to-mount-database.html?utm_source=sw&utm_campaign=exchangemount&utm_medium=f

Command to soft repair the Exchange EDB (database file)
# eseutil /mh   .\exchange1.edb

Command to hard repair edb file
# eseutil /m /l /d  .\exchange1.edb

full content of above site:

Resolve Exchange 2010 Error Unable to Mount Database

To deal with this Exchange 2010 issue: unable to mount the database, it is important to first understand the role of Transaction logs.

A transaction log is the life-and-blood for an Exchange Server, helping it retain smooth functioning on the server. Each and every transaction made to the server is being written in these log files, which are then committed to the database. Until the transaction is not saved in the database, it remains the system memory and the transaction logs.

If any crash occurs during this event, then you lose the content from the memory during the reboot, because it was not completely saved on to the exchange database files. This is why, transaction logs are the robust recovery mechanism to safely restore the data to an Exchange database in a consistent state.

This below mentioned error message is displayed in Exchange 2010, when you are unable to mount a database from a backup:

Error Message:
Exchange is unable to mount the database that you specified. Specified database: d1cdba46-6f79-46f2- ba14-3ae2fa8aad43; Error code: MapiExceptionCallFailed: Unable to mount database. (hr=0x80004005,ec=-2147467259)
CAUSE OF THE ERROR:

 

Microsoft has provided Eseutil utility to verify whether or not the database is in clean shutdown state. If isn’t in a clean shutdown state, then this inbuilt utility may help you to fix up the issues and bring the database into consistency. And if the data is in consistent state, then using the below mentioned resolution, you can restore the data successfully from the backup.

 

RESOLUTION

Removal of log file is one of the common reasons, due to which the database may fail to mount. To resolve the issues, it is important to first perform a consistency check.

 

Verify and Repair Inconsistent Database Using Soft Repair

Eseutil tool can be of great help in performing soft recovery. This method is useful to re-mount database after an abrupt stop.

The user will now be able to mount the database successfully. However, if not then verify the consistency of transaction logs.

Verify and Repair Database Logs Using Hard Repair

Eseutil tool is even helpful in performing hard repair recovery to test the database for any damaged pages. If there are any, then the tool will delete them. This recovery method uses Restore mode (/c) in Eseutil tool to mount a database from online backup.

However, if you are still unable to mount the database, then try using a reliable third-party Exchange Server Recovery tool to efficiently restore data in any condition of damage – even where Eseutil tool fails to deliver the desired result. Kernel for Exchange Server is an advanced recovery tool to repair corrupt Exchange database files, without requiring log files or Exchange services. EDB to PST converter tool even allows you to restore EDB files directly to live Exchange Server and to Office 365 mailbox.

 

 

RDP licensing server enable procedure

1. The graphical management tools for RDS Session Host Management are disabled when not oprerating a Domain (why?). The fall back is configuration via group policy:

Local Computer Policy -> Computer Configuration -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Licensing
Use the specified RD license servers = <server IP>
Set the Remote Desktop licensing mode = Per User

This got us to a stage where Licensing diagnostics looked good and no related local errors showed up in the server logs but remote sessions were still refused, leading to…

2.  Force-removing the RDS licensing time-bomb registry entry:

computer\hkey_local_machine\system\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod

RegEdit alone couldn’t do it. It had to actually be run under highest privileges with the help of Sysinternals: psexec -s -i regedit.exe

After another reboot things seem to be working now. However, I am somewhat suspicious that this only hacked the time bomb but did not actually activate the CAL licenses (none show used in RD License Manager).
Anyway, hope this helps someone not to waste hours.

Thanks.

How to add SRV records in DNS servers for Microsoft Office 365

NET4 REGISTRAR CONTROL PANEL EXAMPLE:

 

SRV Entry request can be made from the control panel itself for the domains. The directions to be followed are –

Login to http://Net4.com with CRN ID and Password;
Click on my services – Domain –
Click on DNS Tab –
Select SRV Entry on the drop down under TTL-
Add SRV Host Entry (like-Services.Protocol.domainname) –
Mention Data entry(like -Weight Port Target) –
Then Create.

Note: For example in the First SRV record provided as per screenshot.
Service = _sip Protocol = _tls Name @ = example.com
So in host you need to mention
_sip._tls.example.com
As Data entry will be in format Weight Port target Weight= 1 Port= 443 Target = sipdir.online.lync.com
So data will be
1 443 sipdir.online.lync.com