<div>
That would defeat the purpose of a password.<br />
<br />
The way the process currently works is &quot;try username/password combination&quot;, and if it passes, check for access rights.<br />
<br />
Your method tries to check a username for access rights based on anonymous credentials - that's a massive security hole.
</div>


That would defeat the purpose of a password.

The way the process currently works is "try username/password combination", and if it passes, check for access rights.

Your method tries to check a username for access rights based on anonymous credentials - that's a massive security hole.

<div>
Some accounts are being blocked by the Webmail access (denial of service - user account), how to block these attacks?<br />
&nbsp;My AD has a policy to lock the user account after 5 failed login attempts with wrong password.<br />
Best regards,<br />
Marcelo
</div>


Some accounts are being blocked by the Webmail access (denial of service - user account), how to block these attacks?
 My AD has a policy to lock the user account after 5 failed login attempts with wrong password.
Best regards,
Marcelo

<div>
<div class="content wysiwyg-content">
We have Exchange 2003 with OWA enabled.<br />
We have noticed that some user accounts started being locked by passwords wrongly typed (OWA intusion try).<br />
As a first workarround, we have disable user's OWA access but this was not successfull.<br />
I know that OWA first verifies Username and Password, and then, checks if user has access to OWA.<br />
Is there any way to make OWA first check if the user has access to it, and then, if passed, verify Username and Password? By this was, this kind of intrusion will not lock the user account anymore.<br />
Any other suggestion is also wellcome.<br />
<br />
Att<br />
Marcelo
</div>
</div>


We have Exchange 2003 with OWA enabled.
We have noticed that some user accounts started being locked by passwords wrongly typed (OWA intusion try).
As a first workarround, we have disable user's OWA access but this was not successfull.
I know that OWA first verifies Username and Password, and then, checks if user has access to OWA.
Is there any way to make OWA first check if the user has access to it, and then, if passed, verify Username and Password? By this was, this kind of intrusion will not lock the user account anymore.
Any other suggestion is also wellcome.

Att
Marcelo

Account locked by OWA access

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.

Microsoft IIS Web Server

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.