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Ted123's avatar
Ted123
Copper Contributor
Mar 11, 2020

Exchange 2016 - Problem adding users to Send As or Send on Behalf

I just took over as an exchange admin at a company and am trying to perform a relatively simple task.  All I need to do is to grant a user "Send As" and "Send on Behalf".  Simple huh?   The problem...
2016
Exchange Server
lewischris123's avatar
lewischris123
Copper Contributor
Jul 27, 2021

KevinCallanan 

I have encountered this same issue

FIX : (check your config files in the Pickers dir)
I have a hybrid environment and found that   "RemoteUserMailbox" was missing in the string for searches in SendAsPicker.aspx and also SendOnBehalfOfPicker.aspx

\Program Files\Microsoft\Exchange Server\V15\ClientAccess\ecp\Pickers\

Ditiaan's avatar
Ditiaan
Copper Contributor
Aug 26, 2021

lewischris123 Can you maybe show a sample of what you changed for this to work,

  • thekmumm's avatar
    thekmumm
    Copper Contributor
    Jan 13, 2023

    Ditiaan 

     

    Hi I don't know if you figure this out but I thought I would add the solution that the previous user mentioned.  Modify this line in the two files mentioned in lewischris123 post

     

    <ecp:StaticBinding Name="AllowedRecipients" TargetType="System.String" DefaultValue="UserMailbox,LinkedMailbox,LegacyMailbox,MailUser,MailUniversalDistributionGroup,MailUniversalSecurityGroup" />

     

    add the RemoteUserMailbox to make the webui include these hybrid/remote users in it's search.

     

    <ecp:StaticBinding Name="AllowedRecipients" TargetType="System.String" DefaultValue="UserMailbox,LinkedMailbox,LegacyMailbox,MailUser,MailUniversalDistributionGroup,MailUniversalSecurityGroup,RemoteUserMailbox" />

    • GaryLosAngeles's avatar
      GaryLosAngeles
      Copper Contributor
      Dec 08, 2023
      Thank you for the additional details, made the fix much easier!