On Wed, Nov 21, 2001 at 05:42:08PM +0100, Patrick von der Hagen wrote:
> If an address is invalid, an incoming SMTP call gets an error response to
> the RCPT command. If an address cannot immediately be verified, a temporary
> error code is given.
Are you sure your DNS server is not broken, and decided that in fact it was
going to return NXDOMAIN instead of any error.
Most mailer's I come across don't deal incorrectly with 4xx errors, but keep
trying after 5xx errors. They're spammers, of course, hence being told to go
away.
MBM
--
Matthew Byng-Maddick <mbm@???> http://colondot.net/
