Operations grimoire/Mail/DKIM: Difference between revisions
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DKIM must succeed: as long as this isn't fixed, Postfix won't send mail for this domain. | DKIM must succeed: as long as this isn't fixed, Postfix won't send mail for this domain. | ||
[[Category:Mail]] | |||
Latest revision as of 21:33, 24 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>:
$ add-dkim-domain domain.tld
To create a key with another selector:
$ add-dkim-domain domain.tld <selector>
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 be readeable 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.
