All posts by Radhakrishnan Govindan

How Does Offline Address Book (OAB) Works – Deep Dive (Part 1)

Welcome to Offline address Book(OAB) multi part articles, In this Series, we are going to learn the complete details of OAB on How it works.

How Does Offline Address Book (OAB) Works – Deep Dive (Part 1)

How Does Offline Continue Reading

Mails are not received by On-premises users and Mails are getting queued in the Office 365 for On-premise Exchange

Noticed mails are getting queued in the Office 365 towards on-premises Connector and mails are get not getting delivered to any on-premises users when you have Hybrid Exchange setup.

you can see the queue using the https://protection.microsoft.com –Mail Flow Continue Reading

Cannot open mailbox Microsoft System Attendant

Issue:
When trying to migrate the mailboxes in Exchange, throws the below Error

Cannot open mailbox /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=MAILBOX01/cn=Microsoft System Attendant

Resolution:

Ideally it happens if there is no proper Database Home MDB mapped for Microsoft System Attendant … Continue Reading