> One thing, that reject message has the IP/Port (smtp:[127.0.0.1]:50100)
> of the next-hop MTA in it.
>
> Can I quiet that message down somewhere to NOT include that info?
> Just include the REJECT, but not the IP/Port, maybe referring to
> it by its 'syslog_name' or something like that?
Postfix 2.7 and later have an smtp_reply_filter feature, but
that was implemented in the Postfix SMTP client, not in the
before-filter SMTP server.
My estimate is that getting the same functionality in the before-filter
SMTP server would take something like this, plus some declarations,
initializations, and documentation:
File smtpd_proxy.c, function smtpd_proxy_cmd():
if (msg_verbose)
msg_info("< %s: %.100s", proxy->service_name, STR(buffer));
/* begin of new code */
if (smtpd_proxy_resp_filter != 0) {
new_reply = dict_get(smtpd_proxy_resp_filter, STR(buffer));
if (new_reply != 0) {
msg_info("%s: replacing server reply \"%s\" with \"%s\"",
state->namaddr, STR(buffer), new_reply);
vstring_strcpy(buffer, new_reply);
} else if (smtpd_proxy_resp_filter->error != 0) {
msg_warn("%s: table %s:%s lookup error for %s",
state->queue_id,
smtpd_proxy_resp_filter->type,
smtpd_proxy_resp_filter->name,
printable(STR(buffer), '?'));
vstream_longjmp(proxy->service_stream, SMTP_ERR_DATA);
}
}
/* end of new code */
/*
* Defend against a denial of service attack by limiting the amount
I'm not sure that I will find the time to implement and test this
before the Postfix 3.1 stable release.
Wietse
