Hello all,

For some reason when I create a zip file with password protection my edge server blocks it

No problems appear when I send a simple zip file without any passwords

Tried the command Get-AttachmentFilterEntry | Format-Table suggesting that *zip format might be in the list of restricted extensions, but couldn'f find anything there

Your help will be much appreciated

Thank you

http://failsys.com/2012/06/22/encrypted-password-zip-email-attachments-stripped/

1.       Go to the Edge server

2.       Stop the Transport service.

3.       Locate the EdgeTransport.exe.config file. This file is located in the following path: drive:\Program Files\Microsoft\Exchange Server\V14\Bin\

4.       Add the following entry between the <appSettings> element and the </appSettings> element of the EdgeTransport.exe.config file:

5.       <add key=AllowInvalidAttachment value=true />

6.       Restart the Transport service.

• Edited by mdkelley 18 hours 31 minutes ago

Hello ,

Please try below options and let me know the status.

Method 1

Run the following cmdlet to disable the Attachment Filter agent on the Edge Transport server:

Disable-TransportAgent -Identity "Attachment Filtering Agent"

Method 2

Add a key to the Edgetransport.exe.config file to ignore certain invalid file type attachments on the Edge Transport server. To do this, follow these steps:

1. Stop the Transport service.
2. Locate the EdgeTransport.exe.config file. By default, this file is located along the following path:  C:\Program Files\Microsoft\Exchange Server\V14\Bin\
3. Add the following key between the <appSettings> element and the </appSettings> element of the EdgeTransport.exe.config file:

   <add key="AllowInvalidAttachment" value="true" />

4. Restart the Transport service.
5. Verify that this issue is resolved. To do this, send an email message together with an attachment that contains the affected file type. Make sure that this email message is processed correctly by using the updated Edge Transport server.

Note If the AllowInvalidZipInAttachmentFilterAgent key is also set in the EdgeTransport.exe.config file, the AllowInvalidZipInAttachmentFilterAgent key takes precedence over the AllowInvalidAttachment key.

regards

Bobson

http://failsys.com/2012/06/22/encrypted-password-zip-email-attachments-stripped/

1.       Go to the Edge server

2.       Stop the Transport service.

3.       Locate the EdgeTransport.exe.config file. This file is located in the following path: drive:\Program Files\Microsoft\Exchange Server\V14\Bin\

4.       Add the following entry between the <appSettings> element and the </appSettings> element of the EdgeTransport.exe.config file:

5.       <add key=AllowInvalidAttachment value=true />

6.       Restart the Transport service.

• Edited by mdkelley Monday, March 30, 2015 12:52 PM

Thank you for the advice,

Method 2 did not help me, 

I disabled  Attachment Filter agent on the Edge Transport server: temporary, but it isn't solution as the filter is the most important thing on Edge server 

Thank you,

Unfortunately it didn't help at all. Any other suggestions? 

Thank you for the advice,

Method 2 did not help me, 

I disabled  Attachment Filter agent on the Edge Transport server: temporary, but it isn't solution as the filter is the most important thing on Edge server 

Please confirm if the Password protected zip file can get through after disabling Attachment Filter agent on the Edge Transport server. If that is the case, the Password protected zip file should be blocked by the Attachment Filter agent.

If the Password protected zip file is still blocked though the Attachment Filter agent is disabled, please check whether there is any Spam/Antivirus Software in your Exchange server. Please disable it to have a try.

Additionally, here is similar thread for your reference:

https://social.technet.microsoft.com/Forums/office/en-US/3d7e36bd-c780-4e56-8492-29749cbf08b0/exchange-2007-blocking-password-protectes-zipped-files?forum=exchangesvrgeneral

Regards,

Hello,

I can totally confirm that after disabling Attachment Filter everything is working perfectly. 

So that suppose to mean that the filter is the reason why encrypted zip files are being blocked

Disabling of the filter is not a solution at all(((