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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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stop opendkim from signing emails if it already has signature

I am signing all the emails for all domains that goes through my postfix MTA, but I need to custom sign some emails for some domain from my application, is it possible to stop opendkim from signing emails if it already has signature?
Anil Bind
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Opendkim running but not signing?

I have had a lot of fun with OpenDKIM - it is actively running on my Debian box and here is my code: root@web1:~# tail -f /var/log/syslog | grep -i dkim Sep 7 16:35:38 web1 sm-mta[1504]: 087FZbYw001504: Milter insert (1): header: DKIM-Signature: …
Antony
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SPF and DKIM for one domain on two servers

I followed this guide to setup SPF and DKIM for emails to be sent from a server for a domain. That server is the location of the actual email server for the domain. I now want to setup another server to be able to send emails from the domain via…
Kohjah Breese
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Can I DKIM sign my email without running a server daemon just for that?

I have an email server that is working perfectly. However, more and more other email servers are getting strict about DKIM signing and DMARC records so I guess I need to finally set that up ... I am running a bind9 DNS server (works perfectly) and a…
user227963
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How to implement DKIM for Domino mail server?

I'd like to write a Domino servlet that will stamp outgoing mail with a DKIM domain keys signature. We would generate the Domino mail server DKIM signature and put it in a TXT file with the DNS manager. How can I stamp an outgoing message with the…
teleman
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openssl .so library version incompatible

I upgraded to openssl-1.1.1d from openssl-1.0.0 But, opendkim supports openssl-1.0. So, some changes were done and compiled it. The compiling was okay. When I try to run the binary, sometimes it runs. But, mostly the following error…
fury.slay
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Can I use a different public key for DKIM signatures for the same domain?

Can I have separate public keys for the following : support@mydomain.com myaddr@mydomain.com I am using a keytable so my initial feel is to create the keys using a different selector and since I am using the keytable, the selector referenced in…
bsee4u
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SOLVED: Amavis and dkim signature on incoming mails: header.s ignored

I am a little bit confused with how amavis process incoming mails. The Postfix service on my Zimbra server is configured to sign outgoing mails. And it works like a charm. Problem is mails sent to internal users (and only them, no issue with…
MaxAuray
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Procmail recipe - If no dkim signature then forward to .spam

Having read through the documentation at http://pm-doc.sourceforge.net/doc/ i cannot find an answer. I want to use procmail to place mail without dkim into user's spam folder. I have found many articles about dkim filtering, none of which explain…
Derple
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DKIM public key & DKIM from DNS are the same but don't match because of spacing

Please take a look at this picture of mail-tester.com saying that Your DKIM signature is not valid. As you can see, the DKIM signature and public key are identical in term of text (characters) but the only problem is the spaces between them. I do…
cuzmAZN
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mail relay routing FROM domain with dkim

Current setup First of all i must say that im so so (read like "nothing know") in things like postfix or open dkim. We have many domains on our exchange (realy a lot). and thats work like "enternet -> firewall -> mail gateway -> exchange's -> mail…
Dopler
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Setup bind9 dns for setup DKIM and SPF records

Currently emails from my mail server is blocked by gmail. I want to setup DKIM and SPF records for my mail server.But web domain register doesn't allow me to setup DKIM and SPF records it says I need to setup separate dns server for those records.…
Sandaru Akalanka
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My OpenDMARC is rejecting emails from firefox.com . Is their SPF record correct? Or am I wrong?

Why is opendmarc rejecting mail from firefox.com? It looks like their SPF record matches their sending address and does pass: v=spf1 mx a include:amazonses.com include:mail.zendesk.com -all /var/log/maillog: postfix/smtpd[19221]: connect from…
Andrew
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