paweln wrote:
does it mean that the appropriate DKIM is assigned to the corresponding e-mail?
Yes, BUT:
paweln wrote:
'.' => { a => 'rsa-sha256', c => 'relaxed/simple', ttl => 30*24*3600 },
You missed "d => '<some-domain>'" in catchall, if no particular dkim key found, no dkim key will be signed.
Note: iRedMail default configuration has "d => <first-mail-domain>".