i'm using opendkim + postfix as a MTA for my website , everything is working: mail are signed by DKIM , gmail mark them as "pass"
the issue is when i'm using this config as a relay from another vm ( via ssmtp ):
As a relay, mails are sent succesfully but never signed by the couple postfix / opendkim
for each test, the sender and the recipiant are the same
here are the logs: direct (mail sent + dkim ok ):
> Apr 7 16:07:16 media-perso postfix/pickup[32522]: CD59C2408AC: uid=0
> from=<me@****.net> Apr 7 16:07:16 media-perso postfix/cleanup[32753]:
> CD59C2408AC: message-id=<20170407140716.CD59C2408AC@ip-***-***-***.eu>
> Apr 7 16:07:16 media-perso postfix/qmgr[32523]: CD59C2408AC:
> from=<me@****.net>, size=379, nrcpt=1 (queue active) Apr 7 16:07:17
> media-perso postfix/qmgr[32523]: CD59C2408AC: removed
when postfix is the relay ( mail sent, but no dkim sign ):
Apr 7 16:07:01 media-perso postfix/smtpd[32750]: connect from repl.****.com[149.***.***.***]
Apr 7 16:07:01 media-perso postfix/smtpd[32750]: 1BD99240365: client=repl.****.com[149.***.***.***]
Apr 7 16:07:02 media-perso postfix/cleanup[32753]: 1BD99240365: message-id=<>
Apr 7 16:07:02 media-perso postfix/qmgr[32523]: 1BD99240365: from=<me@****.net>, size=491, nrcpt=1 (queue active)
Apr 7 16:07:02 media-perso postfix/smtpd[32750]: disconnect from repl.****.com[149.***.***.***]
Apr 7 16:07:02 media-perso postfix/qmgr[32523]: 1BD99240365: removed
of course i would like to sign with DKIM in any case ( direct + relay ) here is the ssmtp config:
root=postmaster
mailhub=mailhub ( postfix server )
hostname=FQDN
FromLineOverride=YES
UseSTARTTLS=YES ( i tried with/without this )
Posfix conf:
# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
inet_interfaces = all
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
milter_default_action = accept
milter_protocol = 6
mydestination = ip-***-176.eu, *****.net, media-perso, localhost.localdomain, localhost
myhostname = ip-****176.eu
mynetworks = hash:/etc/postfix/trusted_client
myorigin = *****.net
non_smtpd_milters = local:/opendkim/opendkim.sock
readme_directory = no
recipient_delimiter = +
relayhost =
slow_destination_concurrency_limit = 2
slow_destination_recipient_limit = 20
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
smtp_tls_loglevel = 1
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scace
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_milters = local:/opendkim/opendkim.sock
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
transport_maps = hash:/etc/postfix/transport
what am i missing ?
config: debian 8
installation from: https://www.linode.com/docs/email/postfix/configure-spf-and-dkim-in-postfix-on-debian-8
