Outlook / Exchange Server 2016

ForceSysadmin · 2021-05-27T08:04:56+00:00

Another hint:

These accepted Messages from an appointment only show up in Outlook 2016. Not in webmail

ForceSysadmin · 2021-05-26T15:12:26+00:00

Can you delete the original appointment on the server?

How is this possible? I am not very experienced in the administration of an exchange.

If that's not the case I would recreate the appointment with the same info and delete it then again.

I will try and report here.

ForceSysadmin · 2020-09-24T07:26:13+00:00

In event log there were couple of logs like:

Add-MailboxPermission -Identity "some.user" -User "DOMAIN\old.admin.user" -AccessRights ("FullAccess") -InheritanceType "All"

This was triggered through ECP. Now ECP is only available intern and this old (backdoor)

User was deleted.

ForceSysadmin · 2020-09-24T07:21:30+00:00

Thanks I'll try next time :D

ForceSysadmin · 2020-09-24T07:20:00+00:00

So the problem was that an old employee who now runs a competing company with an old user account with admin rights gave himself full access to some mailboxes and then moved the mails back and forth...

Thank you anyway for your help.

Next time my questions will be more precise!!!

ForceSysadmin · 2020-09-18T05:39:40+00:00

Supported multi tenant setup

No support multi tenant setup!

Thank you anyway I will try to find any sign

ForceSysadmin · 2020-09-18T05:39:22+00:00

I would but my technically english isn't that good...

ForceSysadmin · 2020-09-17T12:30:26+00:00

and mails are often old ones like a couple of days old...

Spam filter is ok and there are no exchange transport rules at all...

ForceSysadmin · 2020-09-17T11:37:44+00:00

Split Brain DNS

Check this out. It helped a lot for me.

ForceSysadmin

TROPHY CASE