What is a mailbomb?
It is the delivery of enough e-mail to a mailbox to overload the mailbox, or, perhaps, even the system that the mailbox is hosted on. Mailbombs generally take one of the following forms. A mailbox might be targeted to receive hundreds or thousands of messages; this makes it difficult or impossible for the victim to use their own mailbox, possibly subjects them to additional charges for storage space, and might cause them to miss messages entirely due to overflow. This is seen as a denial-of-service attack, perhaps also harassment, and is not tolerated by any known service providers. Alternatively, a message will be bulk-emailed, with the intended victim’s address forged in the “From:” and/or “Reply-To:” lines of the headers. The victim is then deluged with responses, mostly angry. There is a third, particularly nasty, form of mailbomb. This one forges subscription requests to many mailing lists, all for one recipient. The result is a huge barrage of e-mail arriving in the victim’s e-ma