Hi, i hope any one can help regrading this strange issue, i have a mailbox user whom every one in the organization can send as him

i checked the his send as permissions and send on behalf permission and no one configured for any permissions against him

what configuration do you think can make every one in the organization send as this mailbox ?

Hello

tip: check delegate permission from outlook

i already checked delegates in outlook, but in general, you can't use outlook to delegates send as permissions to other user

"

Unlike the Send on Behalf permission, end users cannot grant the Send As permission right by using Outlook. The Send As permission can only be granted by using one of the following methods:

• In the Exchange Management Console, use the Manage Send As Permission wizard

https://technet.microsoft.com/en-us/library/bb123879%28v=exchg.80%29.aspx?f=255&MSPPError=-2147217396

Mahmoud

Hello

and from aduc check user security for send as permission?

aha, yes it's the issue, many thanks to you

but is there are a script that i can use to query all users for this issue (have everyone granted access to send as them) , as i'm afraid that other users have the same permission 

Hello

tip:

Get-Mailbox -resultsize unlimited | Get-ADPermission | where {($_.ExtendedRights -like *Send-As*) -and -not ($_.User -like NT AUTHORITY\SELF)} | FT -Wrap

Hi,

As sneff s said, you could check user security option for sending as permission.

Use the following cmdlets in the Exchange Management Shell to change the access,  Get-Mailboxdatabase | Add-ADPermission -User USERNAME -AccessRights ExtendedRight -ExtendedRights receive-as, send-as  

Additionally, if many users have the issues, I suggest we can ask question in Microsoft Exchange Development forum to confirm whether it can be achieved by any code related script:

https://social.technet.microsoft.com/Forums/exchange/en-US/home?forum=exchangesvrdevelopment

Best Regards,

David 

the strange issue that when i checked user mailbox permission in active directory, i found the everyone group has access to the send as permissions, but these permissions doesn't appear in the exchange management console send as permissions

the above script get the active permissions  that we can see in the exchange management shell, but i'm asking for a script to get the permissions even if it's applied in the active directory not the exchange server

• Edited by Mahmoud Sabry Farghal 21 hours 26 minutes ago