hard bounce

hard bounce

An undeliverable email message. It is returned to the sender as "host unknown" or "recipient unknown," due to an invalid email address or possibly an expired address. A hard bounce may also occur if the receiving mail server has been configured to block all mail from the sender's domain. For example, an ISP may block a known spammer. Hard bounces are permanent for that address unless there is a deliberate change, and the address is later restored as valid.

The Soft Bounce
Contrast with "soft bounce," which is mail that is returned because the recipient's mailbox may be full, the attachment size is too large or due to some connection problem. A soft bounce is often temporary.
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References in periodicals archive ?
If he could attain the sector in the middle of the court near the restraining line, while serving, with the opponent in front of him near the service line, he controlled the ensuing shot sequence with a very hard bounce pass right through the center of the court.
The first shots she was taking were hard bounce shots and she was really overshooting the goal.
Stephen Curry brought the Spectrum Center to its feet at the final buzzer, catching the ball off a hard bounce from himself and throwing in a reverse jam.
There was one hard bounce, then a slow-motion nightmare of nose gear collapse, bending prop and a slide off the runway into the grass.
Usable house file growth counts emails that don't have a hard bounce, which would be a significantly higher number.
It pitched on the green but took a hard bounce and went over the back into the bushes.
The puck took a hard bounce off the boards behind the net and ping-ponged around the crease a bit.
Go on." Arthur was now on his feet again, giving his ball a hard bounce on the floor.
A birdie at the final hole would have sufficed but Wood''s approach took a hard bounce and ran through the green.
But his wedge shot took a hard bounce on the green and scuttled over the back.
A "bounce" is caused from an e-mail that is sent to a recipient and rejected since it is no longer in use by anyone (hard bounce); it had an illegal character ($,%,^; hard bounce); or the mailbox was full (soft bounce).
The kickoff sent the football into the ground for a hard bounce and then high into the air, with Whitehead jumping to make the catch and cradling it as he went down.