n. An email message spewed out in all directions.
1997
Can't seem to make sense of a particular acronym? Netdictionary will nail down terms as picturesque as barfmail (bouncing e-mail) and as vital as spray (multiple hosting of Web pages).
1995 (earliest)
Barfmail: multiple bounce (nondelivered) messages to the level of serious annoyance, like what happens when an inter-mail gateway goes wonky.