I have a quite weird problem here.
Before I start: My boss _really_ wants to send and receive exe files, and I couldn't convince him otherwise, so, as much as I would like to just let my users host their files somewhere on the internet and only mail a link, that is not possible.
So, I made sure that amavis doesn't ban .exe extensions and mailed some of them around to make sure it works.
So today, I got an angry mail in my inbox, saying that he wasn't able to send around .exe files. He attached the error message:
Weird... It wasn't a zip file.
Our content checker found
in an email to you from probably faked sender:
claiming to be: <email@example.com>
Content type: Virus
Our internal reference code for your message is 14233-07/XxeEgH3XtiP3
First upstream SMTP client IP address: [79.224.xxx.xxx]
According to a 'Received:' trace, the message apparently originated at:
[79.224.xxx.xxx], [192.168.xxx.xxx] pxxxxxxx.xxx.t-dialin.net [79.224.xxx.xxx]
From: "xxxxxxxxxxxxxx" <firstname.lastname@example.org>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:18.104.22.168)
The message has been quarantined as: virus-XxeEgH3XtiP3
Please contact your system administrator for details.
And I am perfectly able to send around exe files using the Zimbra web client.
Does this make any sense to you? Maybe there is something wrong with his mail client?