Hi Karl
you just erase the mail address from your virtual address list:
In my config I have:

virtual_alias_maps = hash:/etc/postfix/virtual/virtual_alias_maps
virtual_alias_domains = /etc/postfix/virtual/virtual_alias_domains

any domain/mail-address which has no entry in the above table(s), is
rejected (error code 550).
the first is a hashed lookup table (created with postmap), the second is
a plain text table.

for non-configured mailboxes you will then see something like the
following in your mail-log:

Aug 6 08:16:02 violina postfix/smtpd[4604]: A20093B9C7: reject: RCPT
from ns.4-u.com[195.141.97.100]: 550 <alkuwait@ayni.com>: User unknown
in local recipient table; from=<SheetLiquidation@xy62.com> proto=ESMTP
helo=<4-u.com>

good luck

suomi

tobor wrote:
> Hello,
>
> I have an email address that got onto a spam list, so want to reject all
> email coming to it. i have looked in the faq and howto's etc, but can't
> see how to do it.
>
> I have tried rejecting that address in the access file, but no luck...
>
> Can you help?
>
>
> Thanks in advance,
>
> Karl