This might be a possible symptom of the issue previously reported with mail
to gmail hanging (given the target of the mail below):
https://lists.exim.org/lurker/message/20220810.000245.edf27d60.en.html (it's
a kernel bug - there is a workround until you can get onto a 5.18 kernel).
You should be
I repeated the test with tso off in the NIC. Process as follows:
1. Stop Exim, remove fastopen exclusion in transport conf.
2. ethtool -K eth0 tso off; ethtool -K eth0 tx off
3. Restart exim, retest.
Still experiencing timeouts in a similar fashion much as before - tshark
summary:
https://www.chr
On Thu, 11 Aug 2022 at 17:21, Viktor Dukhovni via Exim-users <
exim-users@exim.org> wrote:
>
> At this point it would be useful to see the full PCAP file for just the
> traffic involving client port "44884".
>
> $ tcpdump -s0 -r /some/file.pcap -w /tmp/tfo.pcap tcp port 44884
>
> The tshark su
On Thu, 11 Aug 2022 at 00:51, Viktor Dukhovni via Exim-users <
exim-users@exim.org> wrote:
>
> Can you post a "tshark" decode of a full capture of a failed delivery?
>
> # tcpdump -s0 -w /some/file.pcap ...
> # tshark -nr /some/file
>
> [ Keep the PCAP file, more questions may arise once t
This does sound something like this issue I blogged about:
https://www.chromosphere.co.uk/2022/06/01/googles-tcp-fast-open-breaks-exim-
delivery/
The workround I have (so far!) successfully implemented with the same
version of Exim on Debian 11 is:
hosts_try_fastopen = !*.l.google.com
into /etc/
On 2022-06-01 11:05, Rory Campbell-Lange wrote:
> My company's servers are having some curious issues sending some email to
google, running exim on Debian.
>
>
> The error seems unique to sending to google; we are sending around 12.5k
messages/day to a wide variety of recipients.
>
> Any though
Time to feed back on this issue I gave this a try, and have been running
it for a few weeks now before getting to the point of raising a bug/bugs. In
/etc/exim4/conf.d/transport/30_exim4-config_remote_smtp, added:
hosts_try_fastopen = !*.l.google.com
Conveniently, when coming to add it, I had a
Hi all,
I've seen this issue raised in:
https://lists.exim.org/lurker/message/20220216.071725.892984cd.en.html
and
https://lists.exim.org/lurker/message/20220313.200645.624cc373.en.html
but haven't seen a definite resolution as yet.
As per other reports, I have a Debian Bullseye
