Postfix
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DKIM with OpenDKIM[edit | edit source]
Create new signing key
opendkim-genkey -D /var/db/dkim -d conti.work -s mail
Add domain to /var/db/dkim/opendkim-signingingtable
conti.work mail._domainkey.conti.work
Add key to /var/db/dkim/opendkim-keytable
mail._domainkey.conti.work conti.work:mail:/var/db/dkim/mail.private
Add TXT record to DNS
cat /var/db/dkim/mail.txt
mail._domainkey IN TXT ( "v=DKIM1; k=rsa; "
"p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeKDcrLhvbX0DoeRuX5b9gx84jyU4oBgMIzf1n4VSo4NUQOEjP63rwGZd4sAsSbm7tcNoc7sUtoj7k7euC9H6xvSCYyewxva7FdJuBH6gbHvMJbl5k9pXnWvDUsovYRHTqXqWL0Ecf8ic9K+vLlCLVac9+3aS31djobJt2CVqeRwIDAQAB" ) ; ----- DKIM key mail for conti.work
Add milter to postfix
smtpd_milters = unix:/var/run/milteropendkim/opendkim.socket milter_default_action = accept
Disable CatchAll for certain addresses[edit | edit source]
Although catch all is active some addresses can be disabled by adding
check_recipient_access hash:/etc/postfix/access,
to the smtp_recipient_restrictions . Access file has
rejected@riechers.info REJECT
checking the mail queue[edit | edit source]
mailq postcat -q <queueid> To Delete: postsuper -d <queueid>