Operations grimoire/Mail/DKIM: Difference between revisions
From Nasqueron Agora
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(Going to deploy this on FreeBSD, so /usr/local/etc) |
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Mails are signed with OpenDKIM, an open-source implementation for DKIM. | |||
== Add a domain == | == Add a domain == | ||
To create a key with <code>unium</code> as DKIM selector for <domain.tld>: | To create a key with <code>unium</code> as DKIM selector for <domain.tld>: | ||
Revision as of 13:44, 20 October 2024
Mails are signed with OpenDKIM, an open-source implementation for DKIM.
Add a domain
To create a key with unium as DKIM selector for <domain.tld>:
$ mkdir /usr/local/etc/opendkim/keys/domain.tld
$ cd /usr/local/etc/opendkim/keys/domain.tld
$ opendkim-genkey -s unium -b 2048 -d domain.tld
$ chown opendkim unium.private
$ cd /usr/local/etc/opendkim
$ make clean all
Test
Send a mail from to another mail server.
You should see a DKIM pass.
You can also from a mailbox for this domain send a mail to check-auth
verifier.port25.com
Troubleshooting
Can't load key from … Permission denied
Keys must belong to opendkim user.
$ chown opendkim /usr/local/etc/opendkim/keys/*/*.private
DKIM must succeed: as long as this isn't fixed, Postfix won't send mail for this domain.
