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.
References in periodicals archive ?
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.
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 with his wedge shot took a hard bounce on the green and scuttled over the back.
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.
My five-iron took a hard bounce off the left bunker and shot out of bounds.
Then he hit an arrow-straight shot at the pin on the last, saw the ball take a hard bounce, catch the contours and roll off the green at the back.
Senders are only notified when their email is a hard bounce, not if it's been placed in a junk or spam folder.
A hard bounce with full flaps at the lowest controllable speed is just itching for an upset, because it forces you to make a difficult decision without hesitation--recover the landing or go round.