On 6/29/2016 5:01 PM, Heiko Schlittermann wrote:
>
> How many recipients does the message in question have? The cutthrough
> delivery works only if all the recipients have the same destination.
I think in all cases there is a single recipient, but at the least they
are all destined for the same domain on the same remote host. Here's an
(anonymized) example transaction:
2016-06-29 17:09:19 1bIMjW-0003KP-SZ <= FAKEDSENDER@???
H=(host-196.202.44.217-static.tedata.net) [196.202.44.217] P=esmtp
S=11906 id=20162906230915.UV41268@MYCUSTOMER T="Documents copies" from
<FAKEDSENDER@???> for chenet.torres@MYCUSTOMER
2016-06-29 17:09:19 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc
1bIMjW-0003KP-SZ
2016-06-29 17:09:20 1bIMjW-0003KP-SZ ** chenet.torres@MYCUSTOMER
F=<FAKEDSENDER@???> R=lookuphost T=remote_smtp H=CUSTOMERHOST
X=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256 CV=yes: SMTP error from remote
mail server after end of data: 550 permanent failure for one or more
recipients (chenet.torres@MYCUSTOMER:blocked)
2016-06-29 17:09:20 cwd=/var/spool/exim 7 args: /usr/sbin/exim -t -oem
-oi -f <> -E1bIMjW-0003KP-SZ
2016-06-29 17:09:20 1bIMjY-0003Ka-9u <= <> R=1bIMjW-0003KP-SZ U=mail
P=local S=13470 T="Mail delivery failed: returning message to sender"
from <> for FAKEDSENDER@???
2016-06-29 17:09:20 1bIMjW-0003KP-SZ Completed
> Can you tcpdump your connection to check if there is at least the
> cutthrough attempt?
Let me give it a try...
Danke.
--
Rob Szarka
http://szarka.org/
