ok great answers thanks to both Daniel and Al. I have done the alias thing for the moment and will see what happens when xtra try again.
I will probably change the error code to 550 in due course. I must say I get zillions of random three letter (and longer too) addresses being sent to. The REALLY amusing thing here is that it is my secretary's sister sending the email. can't even spell her sister's name LOL. On Fri, 17 Dec 2004 12:03:33 +1300 Daniel Grant <[EMAIL PROTECTED]> wrote: > > > > I see from my logs that someone has repeatedly sending > > mail to a non-existent user on my system (for once this is > > something I actually want, not a piece of spam) > > > > How should the sending smtp server react to constant > > messages from my smtp server to the effect that the > > message is rejected : > > > > Dec 16 03:40:57 www postfix/smtpd[23914]: NOQUEUE: reject: > > RCPT from mta202-rme.xtra.co.nz[210.86.15.145]: 450 > > <[EMAIL PROTECTED]>: Recipient address rejected: User > > unknown in local recipient table; > > from=<[EMAIL PROTECTED]> to=<[EMAIL PROTECTED]> > > proto=ESMTP helo=<mta202-rme.xtra.co.nz> > > > > the sender does not seem to have got any bounce or > > notification - this started on Monday, its now friday and > > still going on. -- > > Nick Rout <[EMAIL PROTECTED]> > > FIRST: > add an alias for the account they are trying to send to to > an account locally, postalias, and accept the mail, if you > really do want to receive it, without making the sender send > it again. > > > A 450 indicates temporary failure on the part of *your* mail > server. Xtra will just keep trying to redeliver the mail > until it expires or you accept it. > > Comment out the > unknown_local_recipient_reject_code = 450 > line in postfix's main.cf (which is added by postfix from a > 1->2 upgrade from memory, and may be there in 2 by default), > and restart postfix. > > Then do: > [EMAIL PROTECTED] root]# postconf > unknown_local_recipient_reject_code > which should report back: > unknown_local_recipient_reject_code = 550 > > This will make the sending mail server not retry if the user > can't be identified. > > The other bonus will be Sober.I's infected hosts will get > rejected after they fail their first 20 wrong mail addresses > (unless you've changed smtpd_hard_error_limit). > > Regards > > Daniel -- Nick Rout <[EMAIL PROTECTED]>
