12.04 POSTFIX openDKIM no DKIM signature
I found my own answer. the messages in /var/log/mail.log were instrumental in tracking down what was wrong. I'm still new to Linux, that was a tough lesson learned.
my problem was that in opendkim.conf I specified settings for:
- Domian
- KeyFile
- Selector
And also
- KeyTable
- SigningTable
I removed the tables and the emails were signed from all emails in my domain. That is after i restarted opendkim and postfix.
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Antonios Hadjigeorgalis
Updated on September 18, 2022Comments
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Antonios Hadjigeorgalis over 1 year
I followed the instructions in this post here's my postfix main.cf
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no append_dot_mydomain = no readme_directory = no # TLS parameters smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache myhostname = 2mm.biz alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname mydestination = 2mm.biz, 2mm.compute-1.internal, localhost.compute-1.internal, localhost relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 54.243.206.201/32 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all inet_protocols = all luser_relay = ubuntu@localhost local_recipient_maps = virtual_alias_domains = 2mm.biz virtual_alias_maps = hash:/etc/postfix/virtual #added below for DKIM milter_default_action = accept milter_protocol = 2 smtpd_milters=inet:localhost:8891 non_smtpd_milters=inet:localhost:8891 #EOF
And here is my opendkim.conf
Syslog yes LogWhy yes UMask 022 UserID opendkim:opendkim Domain 2mm.biz KeyFile /etc/opendkim/20121002.private Selector 20121002 Canonicalization relaxed/simple Mode sv #SubDomains no KeyTable refile:/etc/opendkim/KeyTable SigningTable refile:/etc/opendkim/SigningTable ExternalIgnoreList refile:/etc/opendkim/TrustedHosts InternalHosts refile:/etc/opendkim/TrustedHosts Socket inet:8891@localhost
I'm only using one domain so I left SubDomains commented out. When I check with http://www.brandonchecketts.com/emailtest.php it says that there are no domainkeys or DKIM signature. I updated my DNS with my public key. This is on an amazon EC2 64 bit Ubuntu micro instance. I used sendmail command to test the signatures.
I'm to sure where else to look for a solution. Any ideas?