[BlueOnyx:25918] Re: DKIM

[Richard Sidlin]

> 
> Hi Richard,
> 
> Let's sum this up:
> 
> Enable DKIM on the SMTP server. Confirm that the SMTP server has no Vsite
> with the same hostname as the one from the separate POP3/IMAP server
> that you want to protect with DKIM.
> 
> Copy /etc/opendkim/keys/<domain-1> from your POP3/IMAP server to the
> SMTP server.
> 
> On the POP3/IMAP server open /etc/opendkim/KeyTable in an editor. There
> should be a line like this:
> 
> default._domainkey.<domain-1>
> <domain-1>:default:/etc/opendkim/keys/<domain-1>/default.private
> 
> Copy that line and paste it into /etc/opendkim/KeyTable on the SMTP server.
> 
> Back to the POP3/IMAP server: Open up /etc/opendkim/SigningTable in an
> editor. From there you may have to find and copy multiple lines. You they
> may look similar to this:
> 
> *@<domain-1> default._domainkey.<domain-1> *@www.<domain-1>
> default._domainkey.<domain-1> *@mail.<domain-1>
> default._domainkey.<domain-1>
> 
> Copy these lines to /etc/opendkim/SigningTable on the SMTP server and
> save the changes.
> 
> Make sure the ownerships of these files are still correct by running this:
> 
> chown -R opendkim:opendkim /etc/opendkim
> 
> Then restart OpenDKIM and try it out:
> 
> systemctl restart opendkim
> 
> That should do the trick.
> 
Maybe something missing. Getting this error:

Jan 13 09:00:57 smtp sendmail[1678752]: 30D90oP21678752: from=<timing at xxxonline.uk>, size=20218, class=0, nrcpts=1, msgid=<003201d9272d$8956d0c0$9c047240$@xxxonline.uk>, proto=ESMTPSA, daemon=MSA, relay=cpc123404-stev9-2-0-custxx.9-2.cable.virginm.net [xx.29.49.36]
Jan 13 09:00:57 smtp opendkim[1678161]: can't load key from /etc/opendkim/keys/xxxonline.uk/default.private: No such file or directory
Jan 13 09:00:57 smtp opendkim[1678161]: 30D90oP21678752: error loading key 'default._domainkey.xxxonline.uk'
Jan 13 09:00:57 smtp sendmail[1678752]: 30D90oP21678752: Milter: data, reject=451 4.3.2 Please try again later
Jan 13 09:00:57 smtp sendmail[1678752]: 30D90oP21678752: to=<rich.sidlin at gmail.com>, delay=00:00:07, pri=50218, stat=Please try again later