Questions about DomainKeys Identified Mail (DKIM)

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19
votes
3answers
31k views

Setup DKIM (DomainKeys) for Ubuntu, Postfix and Mailman

I'm running Ubuntu 12.04 with Postfix and Mailman. I want to set up DKIM. DomainKeys Identified Mail, or DKIM, is the successor to Yahoo's "DomainKeys". It incorporates Cisco's Identified Mail. What ...
6
votes
2answers
7k views

Using DKIM in my server for multiple domains (websites)

I've read the tutorial posted by MountainX (Setup DKIM (DomainKeys) for Ubuntu, Postfix and Mailman), but I can't figure out how to apply these steps if I want to host and send e-mails for several ...
4
votes
1answer
5k views

12.04 POSTFIX openDKIM no DKIM signature

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 ...
2
votes
1answer
2k views

What package replaces dkim-filter in 12.04?

Previously, I was using the dkim-filter package in Ubuntu 10.04 LTS for DKIM. That package is no longer in Ubuntu 12.04 LTS. What's the replacement or alternative? opendkim, maybe?
1
vote
0answers
46 views

Opendkim key not found

I've been trying to setup DKIM on my VPS with the help of this article, but when I test the installation, I get a opendkim-testkey: No key Below the config files: /etc/opendkim.conf # This is a ...
1
vote
0answers
164 views

opendkim-genkey txt record in Ubuntu 14.04

After upgrading to Ubuntu 14.04 and generating keyfile using opendkim-genkey I've noticed the txt file is broken like: myselector._domainkey IN TXT ( "v=DKIM1; k=rsa; " "p=...
1
vote
0answers
527 views

12.04 Opendkim no key found

Setup Postfix and Dovecot with OpenDKIM. I am not getting key found. Below are the postconf and opendkim file configs. postconf -n root@mysite:~# postconf -n alias_database = hash:/etc/aliases ...
0
votes
1answer
87 views

4.7.1 Service Unavailable - try again later

I'm not sure this is the best place for this question, but I have googled around and can't seem to find a resolution to my issue. Please feel free to redirect me somewhere else if necessary. :) So, I ...
0
votes
1answer
14 views

Google reports dkim passing for invalid host

I set up DKIM, SPF, and DMRAC on ubunutu server a month ago. Everything seemed to be working fine, until I received a curious DMARC report. A rouge server managed to send an email that passed DKIM ...
0
votes
0answers
76 views

Postfix not rejecting mails without DKIM signature

I have configured DKIM using Postfix and OpenDKIM for my email domain. (I followed this tutorial.) Sending works I fine, but I noticed that Postfix is not rejecting incoming spam mails that use my ...
0
votes
0answers
74 views

Why isn't postfix DKIM signing my messages?

I have followed the instructions at https://www.exratione.com/2014/07/setting-up-spf-and-dkim-for-an-ubuntu-1404-mail-server/ But mail-tester.com reports that the messages are not being DKIM signed. ...
0
votes
1answer
68 views

PostFix hostname

I'm new to postfix and was wondering what hostname I should specify in my main.cf file. Is it the VPS hostname? or I can use one of the domains I host in the VPS as hostname? I'm trying to set up ...