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Category: Microsoft Exchange

Clearing Exchange Mail Queues using PowerShell

June 18, 2020 Amir Moiz GulamaliwalaLeave a Comment on Clearing Exchange Mail Queues using PowerShell

It happens sometimes due to Exchange misconfiguration, there could be a spoof email attack which means Exchange Server sends out spam emails using extRead More…

How to Configure External Relay Connector in Exchange 2016

March 26, 2020 Amir Moiz GulamaliwalaLeave a Comment on How to Configure External Relay Connector in Exchange 2016

Custom Receive Connector for an Application Hosted Externally to use Exchange Server 2016 as a Relay My Exchange 2016 is a highly available multi-tRead More…

452 4.3.1 Insufficient System Resources

March 23, 2020 Amir Moiz GulamaliwalaLeave a Comment on 452 4.3.1 Insufficient System Resources

Users mailboxes hosted on my Exchange 2016 started facing issues in receiving the email, and the sender were receiving an NDR with the following errorRead More…

Uninstall Exchange 2010 SP3 Scripts Issue

February 12, 2020 Amir Moiz GulamaliwalaLeave a Comment on Uninstall Exchange 2010 SP3 Scripts Issue

After migrating Exchange 2010 to Exchange 2016, it was time to decommission Exchange 2010 (Single Server), I used the same Exchange 2010 SP3 setup pacRead More…

Clear Out Logs for Exchange 2013/2016/2019

February 9, 2020 Amir Moiz Gulamaliwala3 Comments on Clear Out Logs for Exchange 2013/2016/2019

For every task that is performed in the back-end on our Exchange Servers, there are tons of logs generated at each time. Exchange Administrators need Read More…

421 4.7.0 Too many errors; closing connection Exchange 2016

February 6, 2020February 6, 2020 Amir Moiz GulamaliwalaLeave a Comment on 421 4.7.0 Too many errors; closing connection Exchange 2016

Exchange 2016 running across three (3) Server in DAG, On Exchange01 i could see the all the email are getting stuck in queues including authentic emaiRead More…

Cannot Activate a Database Copy on the Secondary Mailbox Server: EXCHANGE 2010 SP3

January 26, 2020January 26, 2020 Amir Moiz GulamaliwalaLeave a Comment on Cannot Activate a Database Copy on the Secondary Mailbox Server: EXCHANGE 2010 SP3

I have Two HUB/CAS Server (CAS1 and CAS2) and Two Mailbox Servers (MBX1 and MBX2) running in DAG, and running as VMs. MBX1 has some issues and the momRead More…

Migrating Exchange 2010 to 2016

January 8, 2020January 10, 2020 Amir Moiz Gulamaliwala6 Comments on Migrating Exchange 2010 to 2016

Migrating Exchange 2010 to Exchange 2016 I recently migrated Exchange 2010 SP3 to Exchange 2016 for the one of the customer, the migration was doneRead More…

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Microsoft Secure Score

https://ammar.cloud/wp-content/uploads/2023/10/Microsoft-Secure-Score.mp4

MS Security RSS

Congratulations to the Top MSRC 2025 Q1 Security Researchers!
Zero Day Quest 2025: $1.6 million awarded for vulnerability research
Announcing the winners of the Adaptive Prompt Injection Challenge (LLMail-Inject)
Jailbreaking is (mostly) simpler than you think
Exciting updates to the Copilot (AI) Bounty Program: Enhancing security and incentivizing innovation

Recent Posts

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Recent Comments

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  • Home
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