Tainted areas were about using the correct DKIM signature according to the customer so all changes were made in...
remote_smtp:
driver = smtp
dnssec_request_domains = *
hosts_try_dane = *
return_path = ${address:$reply_address}
dkim_domain = ${lookup mysql {select domain from admin WHERE
domain='${domain:$h_from:}' limit 1}}
dkim_selector = ${substr_2_4:$tod_zulu}
dkim_private_key = ${if
exists{/etc/exim/dkim/$dkim_domain-$dkim_selector.pem}{/etc/exim/dkim/$dkim_domain-$dkim_selector.pem}{0}}
dkim_canon=relaxed My users (and thus all their domain names) are in a MySQL Database. My DKIM files are updated once a month - hence the "$tod_zulu" parts...Contents of /etc/exim/dkim/ contain the DKIM files for a few hundred domains...
jpfa.co.za-2207.pem jpfa.co.za-2207.pub jpfa.co.za-2208.pem jpfa.co.za-2208.pub ... so the "2207" (July 2022) files will get removed in a day or two...Thought folk might like to see what I did to help them solve their mastery of DKIM signing per Domain (or tell me what would work better).
Now, My Problem:-Now I see more and more undeliverable emails not being returned to their sender. This didn't happen before. Any clues as to where to look? If an email is undeliverable after a week - they should be returned to sender.
relay /var/spool/exim/input # ls -l total 9760 -rw-r----- 1 mail mail 213385 Jul 15 07:56 1oCEJm-00D32g-Gq-D -rw-r----- 1 mail mail 3522 Jul 30 08:01 1oCEJm-00D32g-Gq-H -rw-r----- 1 mail mail 112777 Jul 15 08:41 1oCF1F-00D3LG-6C-D -rw-r----- 1 mail mail 3687 Jul 30 08:44 1oCF1F-00D3LG-6C-H -rw-r----- 1 mail mail 31875 Jul 19 08:42 1oDgw4-00Ehut-4f-D -rw-r----- 1 mail mail 3608 Jul 30 08:44 1oDgw4-00Ehut-4f-H -rw-r----- 1 mail mail 0 Aug 2 16:59 1oDgw4-00Ehut-4f-J -rw-r----- 1 mail mail 31331 Jul 18 14:54 1oDQGE-00EUsC-An-D -rw-r----- 1 mail mail 969 Aug 2 15:08 1oDQGE-00EUsC-An-H -rw-r----- 1 mail mail 175065 Jul 20 15:16 1oE9YY-00FCQn-VN-D -rw-r----- 1 mail mail 3664 Jul 31 15:27 1oE9YY-00FCQn-VN-H -rw-r----- 1 mail mail 112 Jul 22 12:59 1oEqNs-00FeP3-JI-D -rw-r----- 1 mail mail 3636 Aug 2 13:02 1oEqNs-00FeP3-JI-H -rw-r----- 1 mail mail 2240 Jul 21 10:40 1oERje-00FS4Y-9o-D -rw-r----- 1 mail mail 3818 Aug 1 10:42 1oERje-00FS4Y-9o-H -rw-r----- 1 mail mail 409222 Jul 27 12:57 1oGej7-00GfSF-PZ-D -rw-r----- 1 mail mail 3988 Jul 30 13:20 1oGej7-00GfSF-PZ-H -rw-r----- 1 mail mail 409226 Jul 27 13:00 1oGemN-00GfSF-66-D -rw-r----- 1 mail mail 3952 Jul 30 13:03 1oGemN-00GfSF-66-H -rw-r----- 1 mail mail 409224 Jul 27 12:41 1oGeTP-00GfSF-CL-D -rw-r----- 1 mail mail 3973 Jul 30 12:48 1oGeTP-00GfSF-CL-H -rw-r----- 1 mail mail 409225 Jul 27 12:45 1oGeXK-00GfSF-Rq-D -rw-r----- 1 mail mail 3934 Jul 30 12:51 1oGeXK-00GfSF-Rq-H -rw-r----- 1 mail mail 1728 Jul 27 16:24 1oGhxg-00Gja7-4n-D -rw-r----- 1 mail mail 3635 Jul 30 16:25 1oGhxg-00Gja7-4n-H -rw-r----- 1 mail mail 5100550 Jul 26 18:25 1oGNMx-00GSKI-HX-D -rw-r----- 1 mail mail 3640 Jul 29 18:25 1oGNMx-00GSKI-HX-H -rw-r----- 1 mail mail 33013 Jul 28 08:24 1oGwx8-00HE0Z-ED-D -rw-r----- 1 mail mail 3531 Jul 31 08:29 1oGwx8-00HE0Z-ED-H [newer files not shown]I also don't like how some "headers" are much newer than the Data files - unless they are being updated as and when a partial delivery (multiple recipients) is made - though most of the above are to a single recipient.
I also deleted an even older bunch of "Headers only" ( -H suffixed files) - which confuses me. Is EXIM forgetting to completely clean up after itself?
-- Mark James ELKINS - Posix Systems - (South) Africa m...@posix.co.za Tel: +27.826010496 <tel:+27826010496>For fast, reliable, low cost Internet in ZA: https://ftth.posix.co.za <https://ftth.posix.co.za>
OpenPGP_0xB6FA15470B82C101.asc
Description: application/pgp-keys
OpenPGP_signature
Description: OpenPGP digital signature
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