nastygram

/nasteegram/ , n. 1. A protocol packet or item of email (the latter is also
called a letterbomb ) that takes advantage of misfeatures or security holes
on the target system to do untoward things. 2. Disapproving mail, esp. from
a net.god , pursuant to a violation of netiquette or a complaint about
failure to correct some mail- or news-transmission problem. Compare
shitogram , mailbomb. 3. A status report from an unhappy, and probably
picky, customer. What'd Corporate say in today's nastygram? 4. [deprecated]
An error reply by mail from a daemon ; in particular, a bounce message.