I wonder if you'd be able to help with a customisation of the "Attachment alert" zimlet?
Currently this scans for a keyword and alerts if no attachment is attached.
We would like to adapt this to scan for a list of banned attachments.
A soft ban should bring up a confirmation dialogue box asking the user to confirm sending with the banned attachment and a BCC of the email to an administrator.
A hard ban should not allow the email to be sent.
We need this as we do not want modifiable Office documents sent out - they should be PDF. Therefore our keyword list should scan for the office extensions.
I have tried modifying the existing "Attachment alert" zimlet but do not seem to be reading the attachment extension correctly.
There is a huge amount of activity asking for banning of extensions by filetype (with filters such as by user) on Zimbra. I think this zimlet would be very popular.
I am prepared to offer a small bounty - maybe $100?
I hope you can help.