mirror of
https://github.com/YunoHost/doc.git
synced 2024-09-03 20:06:26 +02:00
119 lines
3.8 KiB
Markdown
119 lines
3.8 KiB
Markdown
|
|
|
|
Hi,
|
|
|
|
Please note that :
|
|
|
|
This is the revision 2 of this Work In Progress How-To
|
|
Until this is natively integrated in YnH core apps, it will mean to that postfix conf will be blocked (or each time there is a change some configuration lines will need to be added to the end of /etc/postfix/main.cf)
|
|
To be fully functionnal DKIM requires a modification of the DNS, which propagantion can take up to 24h
|
|
CREDIT : This tutorial has been initially based on the DKMI section of : http://sealedabstract.com/code/nsa-proof-your-e-mail-in-2-hours/ from Drew Crawford
|
|
CREDIT : This tutorial has been reviewed based on https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-dkim-with-postfix-on-debian-wheezy from Popute Sebastian Armin
|
|
Replace DOMAIN.TLD by your own domain name
|
|
|
|
Changes in rev 2 :
|
|
|
|
Much easier to manage more than one DOMAIN.TLD (future proof)
|
|
Updated configuration as it seemed that the previous one was based on old software
|
|
|
|
So, here is the thing :
|
|
|
|
We start by installing the right software :
|
|
|
|
sudo aptitude install opendkim opendkim-tools
|
|
|
|
Then we configure opendkim
|
|
|
|
sudo nano /etc/opendkim.conf
|
|
(Text to be placed in the text file: )
|
|
|
|
AutoRestart Yes
|
|
AutoRestartRate 10/1h
|
|
UMask 022
|
|
Syslog yes
|
|
SyslogSuccess Yes
|
|
LogWhy Yes
|
|
|
|
Canonicalization relaxed/simple
|
|
|
|
ExternalIgnoreList refile:/etc/opendkim/TrustedHosts
|
|
InternalHosts refile:/etc/opendkim/TrustedHosts
|
|
KeyTable refile:/etc/opendkim/KeyTable
|
|
SigningTable refile:/etc/opendkim/SigningTable
|
|
|
|
Mode sv
|
|
PidFile /var/run/opendkim/opendkim.pid
|
|
SignatureAlgorithm rsa-sha256
|
|
|
|
UserID opendkim:opendkim
|
|
|
|
Socket inet:8891@127.0.0.1
|
|
|
|
Selector mail
|
|
|
|
Connect the milter to Postfix:
|
|
|
|
sudo nano /etc/default/opendkim
|
|
|
|
(Text to be placed in the text file: )
|
|
SOCKET="inet:8891@localhost"
|
|
|
|
Configure postfix to use this milter:
|
|
|
|
sudo nano /etc/postfix/main.cf
|
|
|
|
(Text to be placed AT THE END in the text file: )
|
|
milter_protocol = 2
|
|
milter_default_action = accept
|
|
smtpd_milters = inet:127.0.0.1:8891
|
|
non_smtpd_milters = inet:127.0.0.1:8891
|
|
|
|
Create a directory structure that will hold the trusted hosts, key tables, signing tables and crypto keys:
|
|
|
|
sudo mkdir -pv /etc/opendkim/keys/DOMAIN.TLD
|
|
|
|
Specify trusted hosts:
|
|
|
|
sudo nano /etc/opendkim/TrustedHosts
|
|
|
|
(Text to be placed in the text file: )
|
|
127.0.0.1
|
|
localhost
|
|
192.168.0.1/24
|
|
*.DOMAIN.TLD
|
|
|
|
Create a key table:
|
|
|
|
sudo nano /etc/opendkim/KeyTable
|
|
|
|
(Text to be placed in the text file: Be very careful, it needs to be on a SINGLE LINE for each domain )
|
|
mail._domainkey.DOMAIN.TLD DOMAIN.TLD:mail:/etc/opendkim/keys/DOMAIN.TLD/mail.private
|
|
|
|
Create a signing table:
|
|
|
|
sudo nano /etc/opendkim/SigningTable
|
|
|
|
(Text to be placed in the text file: )
|
|
*@DOMAIN.TLD mail._domainkey.DOMAIN.TLD
|
|
|
|
Now we generate the keys ! smile
|
|
|
|
sudo cd /etc/opendkim/keys/DOMAIN.TLD
|
|
sudo opendkim-genkey -s mail -d DOMAIN.TLD
|
|
|
|
Output the DKIM DNS line to the terminal. Then, we install it on our DNS server. My ZONE file looks like this. (Be very careful with the formatting, the "p=...." needs to be in a single line.
|
|
|
|
cat mail.txt
|
|
|
|
mail._domainkey IN TXT "v=DKIM1; k=rsa; p=AAAKKUHGCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPFrBM54eXlZPXLJ7EFphiA8qGAcgu4lWuzhzxDDcIHcnA/fdklG2gol1B4r27p87rExxz9hZehJclaiqlaD8otWt8r/UdrAUYNLKNBFGHJ875467jstoAQAB" ; ----- DKIM key mail for DOMAIN.TLD
|
|
|
|
And we don't forget to put the right rights otherwise opendkim will get grumpy...
|
|
|
|
chown -Rv opendkim:opendkim /etc/opendkim*
|
|
|
|
And finally, we restart everything :
|
|
sudo service opendkim restart
|
|
sudo service postfix restart
|
|
|
|
To test if it is all working well (don't forget that the DNS propagation can take a bit of take....) you can simply send an email to check-auth@verifier.port25.com and a reply will be received. If everything works correctly you should see DKIM check: pass under Summary of Results.
|
|
|