Ralf Hildebrandt:
> Oct 21 21:24:31 zivmail postfix/smtp[7663]: C51E4BF414:
> to=<[email protected]>,
> relay=mail.charite.de[141.42.202.200]:25, delay=6.4, delays=0.27/0.01/6.1/0,
> dsn=5.5.0, status=bounced (Protocol error: host
> mail.charite.de[141.42.202.200] refused to talk to me: 220-mail.charite.de
> ESMTP 421-4.3.2 All server ports are busy 421 4.3.2
> Contact [email protected] (using a different email address!) for
> technical assistance. Please provide the following information in your
> problem report: This error message, time (Oct 21 21:24:31), client
> (128.176.188.24) and server (mail.charite.de). We speak both English and
> German.)
This bug was fixed in Postfix 2.7 with the introduction of the
smtp_reply_filter feature, but it was never recorded in the HISTORY
file, and therefore it was never back-ported to earlier Postfix
versions.
Wietse
20111024
Bugfix (introduced: Postfix 2.3): while the Postfix SMTP
client's protocol parser uses the last SMTP reply line as
intended, the error processing routine was taking information
from the beginning of the response. This was causing "Protocol
error" bounces with postscreen responses on Postfix < 2.6.
Reported by Ralf Hildebrandt. File: smtp/smtp_trouble.c.
*** ../postfix-2.6.13/src/smtp/smtp_trouble.c Thu Dec 13 20:01:56 2007
--- src/smtp/smtp_trouble.c Sat Nov 14 20:59:33 2009
***************
*** 288,294 ****
* cycles.
*/
VSTRING_RESET(why->reason);
! if (mta_name && reply && reply[0] != '4' && reply[0] != '5') {
vstring_strcpy(why->reason, "Protocol error: ");
status = "5.5.0";
}
--- 288,294 ----
* cycles.
*/
VSTRING_RESET(why->reason);
! if (mta_name && status && status[0] != '4' && status[0] != '5') {
vstring_strcpy(why->reason, "Protocol error: ");
status = "5.5.0";
}
