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djanym
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djanym

Getting error: Milter (opendkim): error connecting to filter: Connection refused by localhost

December 18, 2016 1.5k views
Email Ubuntu 16.04

I've Ubuntu 16.04
I'm trying to config DKIM for sendmail.
Getting this error when email is sending:
sm-mta[19671]: uBILBoWg019671: Milter (opendkim): error connecting to filter: Connection refused by localhost

I've added port 12301 to firewall.
Also in /etc/opendkim.conf I've added:
Socket inet:12301@localhost

And also in /etc/default/opendkim:
SOCKET="inet:12301@localhost"

And in /etc/mail/sendmail.mc at the end:
INPUTMAILFILTER('opendkim', 'S=inet:12301@localhost')

Any help?

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1 Answer
Woet December 18, 2016

Is it running?

Reply
  • djanym December 18, 2016

    How can I check?

    • Woet December 18, 2016 
      ps faux | grep -i dkim
      • djanym December 18, 2016

        yes

        opendkim 18324  0.0  0.4 221588  2456 ?        Ssl  20:14   0:00 /usr/sbin/opendkim -x /etc/opendkim.conf -u opendkim -P /var/run/opendkim/opendkim.pid -p local:/var/run/opendkim/opendkim.sock
        • Woet December 18, 2016

          Is it listening to port 12301 (lsof -i :12301 -n) and did you recompile your sendmail config?

          • djanym December 18, 2016

            strange but nothing is listening 12301

            by recompile you mean this:

            m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

            ?

  • djanym December 18, 2016

    I see this

    systemctl status opendkim.service
● opendkim.service - DomainKeys Identified Mail (DKIM) Milter
   Loaded: loaded (/lib/systemd/system/opendkim.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sun 2016-12-18 21:50:29 UTC; 16s ago
     Docs: man:opendkim(8)
           man:opendkim.conf(5)
           man:opendkim-genkey(8)
           man:opendkim-genzone(8)
           man:opendkim-testadsp(8)
           man:opendkim-testkey
           http://www.opendkim.org/docs.html
  Process: 20153 ExecStart=/usr/sbin/opendkim -x /etc/opendkim.conf -u opendkim -P /var/run/opendkim/opendkim.pid -p $SOCKET $DAEMON_OPTS (c
  Process: 20146 ExecStartPre=/bin/chown opendkim.opendkim /var/run/opendkim (code=exited, status=0/SUCCESS)
  Process: 20141 ExecStartPre=/bin/mkdir -p /var/run/opendkim (code=exited, status=0/SUCCESS)
 Main PID: 18324 (code=exited, status=0/SUCCESS)
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