Lluis Ribes wrote:
Why?
because:
- mail loss is bad. The RFC recommends against it (search the RFC for
"frivoulously"). ask those of us who keep criticizing hotmail for such
behaviour.
- with a reject at RCPT time, you don't lose your bandwidth and time
reading the message (the connection is rejected before the DATA command).
If I want to avoid that the spammer wouldn't receive a response like this:
most spam comes with a forged sender, so the spammer won't see anything.
other spam is sent by ratware that doesn't care about errors (check
your logs and you'll see them retry even after a reject).
spammers don't have much incentive to read bounces or smtp errors. fire
and forget is more efficient (they don't pay for the resources, or they
don't pay enough to care).
and if spammers obey your rejection and stop spamming that address, then
you should really be happy!
"but it was rejected by the recipient domain. We recommend contacting the other email
provider for further information about the cause of this error. The error that the other
server returned was: 554 554 5.7.1 <[EMAIL PROTECTED]>: Recipient address rejected:
Access denied (state 14).
