https://bugs.exim.org/show_bug.cgi?id=2408
--- Comment #14 from David Carter <dpc22@???> ---
Okay, I have constructed a test environment using three routers. I will attach
some output from "exim -d+all -R cam.ac.uk" in a second.
---8<---
# Simulated alias file lookup. Target account has run out of quota.
foo1:
driver = redirect
domains = foo.cam.ac.uk
local_parts = out-of-quota
data = dpc99@???
# Simulated alias file lookup with special routing override. Target host does
not exist.
foo2:
driver = redirect
domains = foo.cam.ac.uk
local_parts = broken-dns
data = broken-dns@???
address_data = use_broken_dns=yes
broken_dns:
driver = manualroute
condition = ${extract {use_broken_dns}{$address_data} }
route_data = does-not-exist.cam.ac.uk bydns
host_find_failed = defer
self = fail
transport = smtp
---8<---
The following:
$ Mail broken-dns@???
Subject: Test #1
.
EOT
$ Mail out-of-quota@???
Subject: Test #2
.
EOT
Generates the following delay_warning message:
The address to which the message has not yet been delivered is:
out-of-quota@???
Delay reason: lookup of host "does-not-exist.cam.ac.uk" failed in
broken_dns router
(note dns failure rather than quota warning).
However this only happens 50% of the time.
The information in the retry database occilates between two states each
time that a queue run takes place. (I'm using "queue_run_in_order" to
ensure that the order that "exim -R cam.ac.uk" processes the queue is
consistent).
A bit of trial and error reveals that I get the incorrect delay_warning
message if I fire off a queue run when no entry for R:foo.cam.ac.uk exists.
$ /opt/exim/bin/exim_dumpdb /spool/exim retry
R:dpc99@??? -44 13377 H=cyrus-1a-intramail.csi.cam.ac.uk
[192.168.128.1]: SMTP error from remote mail server after RCPT
TO:<dpc99@???>: 452 4.2.2 Over quota SE
30-Jul-2019 15:54:04 30-Jul-2019 15:54:04 30-Jul-2019 15:55:04
$ /opt/exim/bin/exim -R cam.ac.uk
$ /opt/exim/bin/exim_dumpdb /spool/exim retry
R:dpc99@??? -44 13377 H=cyrus-1a-intramail.csi.cam.ac.uk
[192.168.128.1]: SMTP error from remote mail server after RCPT
TO:<dpc99@???>: 452 4.2.2 Over quota SE
30-Jul-2019 15:54:04 30-Jul-2019 15:54:04 30-Jul-2019 15:55:04
R:foo.cam.ac.uk -32 0 lookup of host "does-not-exist.cam.ac.uk" failed in
broken_dns router
30-Jul-2019 15:54:22 30-Jul-2019 15:54:22 30-Jul-2019 16:09:22
$ /opt/exim/bin/exim -R cam.ac.uk
$ /opt/exim/bin/exim_dumpdb /spool/exim retry
R:dpc99@??? -44 13377 H=cyrus-1a-intramail.csi.cam.ac.uk
[192.168.128.1]: SMTP error from remote mail server after RCPT
TO:<dpc99@???>: 452 4.2.2 Over quota SE
30-Jul-2019 15:54:04 30-Jul-2019 15:54:04 30-Jul-2019 15:55:04
$ /opt/exim/bin/exim -R cam.ac.uk
$ /opt/exim/bin/exim_dumpdb /spool/exim retry
R:dpc99@??? -44 13377 H=cyrus-1a-intramail.csi.cam.ac.uk
[192.168.128.1]: SMTP error from remote mail server after RCPT
TO:<dpc99@???>: 452 4.2.2 Over quota SE
30-Jul-2019 15:54:04 30-Jul-2019 15:54:04 30-Jul-2019 15:55:04
R:foo.cam.ac.uk -32 0 lookup of host "does-not-exist.cam.ac.uk" failed in
broken_dns router
30-Jul-2019 15:54:27 30-Jul-2019 15:54:27 30-Jul-2019 16:09:27
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