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Questions tagged [opendkim]

Open source implementation of the DKIM (Domain Keys Identified Mail). The capabilities include signing and verifying DKIM signature of the email.

OpenDKIM is an open source implementation of the (Domain Keys Identified Mail) sender authentication system standardized by the IETF (RFC6376). The project started from a code fork of version 2.8.3 of the open source dkim-milter package,

OpenDKIM capabilities was including signing and verifying DKIM signature of the email. The package consists of a library that implements the DKIM service and a milter-based filter application that can plug in to any milter-aware MTA such as and .

The documentation of command line options can be found in this page.
The documentation of opendkim.conf configuration file can be found in this page.

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Something is resetting my opendkim files (KeyTable and SigningTable)

Something is regularly resetting my /etc/opendkim/KeyTable and /etc/opendkim/SigningTable files. I have to manually re-edit them and restart opendkim every time... How to find out what is resetting them and how to stop it?
leyou
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System reboot results in T_DKIM_INVALID spamassassin

I have installed and configured OpenDKIM in my Ubuntu 16.04 digitalocean vps and enabled the DKIM Plugin in SpamAssassin with loadplugin Mail::SpamAssassin::Plugin::DKIM in one of the .pre files located in /etc/spamassassin/ I have also installed…
Phoenix Aspacio
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OpenDKIM mail header: temperror

I've just installed and configured OpenDKIM to use it with Postfix and Dovecot on my server. I can send e-mails to another accounts, but when I check the header I find this: dkim=temperror (no key for signature) Here is the most important…
user320075
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OpenDKIM - How can I set these signing options in the conf file

I followed this guide for opendkim, and I wondering how to set the following options in the conf file: Signature expiration (x) creation time (t) standard headers to be validated (h=) body signature length (l=) to be auto determined and included in…
Vnge
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Postfix fails to verify GMail's DKIM signature

I have my Debian (7.9 "wheezy") E-Mail-server (Postfix 2.9.6-2) setup to sign and verify DKIM signatures in e-mail messages using OpenDKIM (version 2.6.8-4). My server passes the DKIM test at GMail when I send a mail from my server to their service…
comfreak
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Route53 DNS and DKIM/TXT

I've been trying to set an openDKIM public key as a TXT record within the Route53 hosted zone for my domain. The record is mail._domainkey .zewtie.io but, however I enter the public key in the Route53 TXT record, the DKIM public key never seems to…
Paul Browne
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Mail marked as spam (Gmail/Hotmail): IP not on blacklist, DKIM Valid, SPF Valid and DMARC valid

I'm trying to send mail from my own domain (which is 15 days old now) but I'm having some troubles. Check the following mail body: Delivered-To: ------@gmail.com Received: by 10.25.89.200 with SMTP id n191csp1613325lfb; Mon, 15 Jun 2015…
user1226868
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Postfix on server with multiple IP addresses sends mails with wrong HELO in header

I have a VPS with multiple IP addresses: venet0:0 x.x.x.2 venet0:1 x.x.x.3 venet0:2 x.x.x.4 venet0:3 x.x.x.5 All IPs have A records m2.domain.com -> x.x.x.2 m3.domain.com -> x.x.x.3 m4.domain.com -> x.x.x.4 m5.domain.com -> x.x.x.5 and rDNS…
Vladimir Dimitrov
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OpenDKIM on MTA not signing mails from remote mail servers

I have a configuration where we have one MTA responsible for sending emails from a number of internal servers. The internal servers all run Postfix on a number of different domains. They are all configured to relay via the MTA. I am attempting to…
btongeorge
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Postfix / OpenDKIM config on Centos8

I've setup Postfix with Dovecot as an integrated mail service for my SaaS app, it worked great as an inbox. The issue started when I started to send emails, it was not signed so I went ahead and installed opendkim and configured it with Postfix,…
Marius Terblanche
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Exim Unable to Read DKIM Key

Exim is spitting out (what looks like) a privilege error: # tail -n1 /var/log/exim/paniclog 2021-11-15 16:38:35.955 [682275] 1mme43-002rUN-QV unable to open file for reading: /etc/opendkim/keys/xxxxxxxxx.com/mail.private despite the fact it looks…
frankplow
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How to diagnose opendkim RSA signatures

I'm having an issue where my DKIM signatures are failing everywhere. There was a question on this here, but the original poster answered his own question, and the answer seems unrelated. After some digging, I had thought this might be a…
philolegein
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Is DKIM/ARC working properly on my Mailman server?

I've set up a Mailman 3 server with Postfix. I've configured Postfix to add DKIM headers using OpenDKIM and a test email from that server to a Microsoft-hosted email address suggests that DKIM is OK: Authentication-Results: spf=pass (sender IP is…
Philip Colmer
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OpenDKIM reports "signing table references unknown key" (CentOS 8)

I'm attempting to configure OpenDKIM with PostFix on CentOS 8. I've set the following in /etc/opendkim.conf: PidFile /run/opendkim/opendkim.pid Mode sv Syslog yes SyslogSuccess yes LogWhy yes UserID opendkim:opendkim Socket …
James Shields
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OpenDKIM not signing but no error

I've set up opendkim (2.10) with postfix on an ubuntu 16.04 host. According to the logs, all is fine (i.e., no errors), but mail isn't being signed. I can see that postfix is passing messages to OpenDKIM (because of I stop opendkim, postfix…
jma
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