Hello!
I'm having trouble wrapping my head around how to 1) lsearch a list multiple
times until there are no more matches and 2) format that as an EXIM list (colon
separated). This is to do dual DKIM signing (RSA+ed25519). This what I have now:
exim4.conf.localmacros:
DKIM_SELECTOR =
${extract{selector}{${lookup{$sender_address_domain}lsearch*@{/etc/exim4/dkim/KeyTable}}}{$value}{}}
DKIM_DOMAIN = ${lc:${domain:$h_from:}}
DKIM_FILE =
${extract{privkey}{${lookup{$sender_address_domain}lsearch*@{/etc/exim4/dkim/KeyTable}}}{$value}{}}
DKIM_PRIVATE_KEY = ${if exists{DKIM_FILE}{DKIM_FILE}{0}}
DKIM_CANON =
${extract{canon}{${lookup{$sender_address_domain}lsearch*@{/etc/exim4/dkim/KeyTable}}}{$value}{relaxed}}
DKIM_STRICT =
${extract{strict}{${lookup{$sender_address_domain}lsearch*@{/etc/exim4/dkim/KeyTable}}}{$value}{false}}
dkim/KeyTable:
example.com domain=example.com canon=relaxed strict=true
selector=20210724_1_rsa
privkey=/etc/exim4/dkim/example.com/example.com_20210724_1_rsa.pem
example.com domain=example.com canon=relaxed strict=true
selector=20210724_1_ed25519
privkey=/etc/exim4/dkim/example.com/example.com_20210724_1_ed25519.pem
This works fine for finding the first listing. Or maybe I'm doing this all
wrong (even though it works) and there is a better way to do it.
This is on Debian stable with exim-daemon-heavy version 4.92 #3 built
01-May-2021 09:42:39.
Thanks!
Perry
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