We have a situation at work regarding to our mail filtering appliance and I was hoping that you could give us some insight on how to approach this issue.
We've been receiving spam emails with the subject "Curriculum Vitae (Name)" from different gmail accounts. Even though blocking those individual accounts is simple, we would like to find a workaround so that we don't have to do it manually; blocking any mail with such subject is not convenient, as it wouldn't let legitimate mails come through.
Although we had initially thought of blocking any sender who tries to get several messages delivered briefly (something like a burst of emails), from what we were told by the supplier there is no such functionality in this appliance.
By the way, our mail filtering solution is InterScan Messaging Security Virtual Appliance from Trend Micro.
Any ideas will be truly appreciated, thanks in advance.