Robert Schetterer wrote:
i cant deliver out disposition-notification mails produced by
> exchange/outlook to a special recipient domain
( guess the smtp content
inspector there has a problem only with this type of mails if they are
dkim signed, but that speculate )
If you can verify DKIM is the problem, you can strip the DKIM
signature for that domain only. (Use a master.cf alternate
smtp transport with -o smtp_header_checks to strip DKIM
headers for that domain.)
But it seems unlikely DKIM is the problem if it's only DSNs
that are affected... You can test with hand-crafted messages
and use mini_sendmail or similar to send test messages with
and without DKIM directly to the problem host.
Maybe you can simply not offer DSN support to them when they
send mail to you.
http://www.postfix.org/postconf.5.html#smtpd_discard_ehlo_keyword_address_maps
The table entry would look like this, note the key must be an
IP, not a hostname:
ip.of.bad.client dsn, silent-discard
--
Noel Jones
