CodeTwo Base.title

Disable OWA signatures

Problem:

How to prevent users from configuring OWA signatures on their own.

Applies to:

This article applies to Exchange Server 2013, 2016 and Exchange Online (Office 365). For older versions of Exchange Server i.e. 2007 and 2010 see this article.

Solution:

To prevent your users from adding their own signatures in OWA you need to disable "Email signature" feature in Outlook Web App policy assigned to your users. To do that follow the steps below:

  1. Log on to your Exchange Admin Center.
  2. Go to Permissions, Outlook Web App policies.

535-1
Fig. 1. OWA policy in Exchange Admin Center of Office 365.

  1. Double click on the policy that is assigned to the users in question.
  2. In the new window that will pop up navigate to features and expand the list of features by clicking More options.

535-2
Fig. 2. Email signature feature that must be disabled.

  1. On the list of features find "Email signature" and deselect it.
  2. Apply changes.

Be advised that for the above to work, users must be assigned the policy you are editing and this is not always the case. See this MS Technet article to find out if your users have been already assigned the policy in question and if not, how to do that.

Also, you must be aware of the fact that disabling users the ability to set their OWA signatures on their own does not remove signatures that were already configured. You can however, remove all OWA signatures via PowerShell, see our article on how to do this.

See also:

Our Clients:
Unicef
Facebook
Shell
T-Systems
Loreal
Casio
UPS Israel
Oford University
Mitsubishi Motors
Toshiba TEC UK Imaging Systems Ltd
Illinois Institute of Technology
MAN Diesel
McDonalds India
Skoda Auto
Bank of Israel
Fujifilm
China Mobile
Santander
Samsung SDI
Skanska
Generali
Telmex
Toyota Tsusho
BECHTEL
Ricoh
BAE SYSTEMS
Federação Portuguesa de Futebol
Credit Agricole
HYUNDAI
Rothschild
Toyota Boshoku
Oriflame Romania
ING
Ikea
Nordea

Partners, certificates & awards