Open Radar

 
Summary:
I've configured amavisd in macOS Server to sign email with DKIM key.
Since Server 5.2 signing did not work anymore.

I was able to fix it by manually patching /Applications/Server.app/Contents/ServerRoot/usr/bin/amavisd
using advice from apple forums ->
https://discussions.apple.com/thread/7684786?start=0&tstart=0
After adding line 22852  $msginfo->originating(c('originating'));
signing works again.

Please fix this or create support article about proper DKIM configuration on macOS Server (or even better integrate this option into Server.app GUI).

Steps to Reproduce:
Configure amavisd to sign email using dkim. See configuration files in attachment.
=>
1. Generate DKIM key
mkdir -p /somedir/dkim 
chown _amavisd /somedir/dkim 
sudo -u _amavisd -H amavisd genrsa /somedir/domain.com 2048
chown root:_amavisd /somedir/domain.com.pem  
chmod 640 /somedir/domain.com.pem

2. Add lines:
dkim_key('domain.com', 'default', '/somedir/domain.com.pem');
@dkim_signature_options_bysender_maps = ( { '.' => { ttl => 21*24*3600, c => 'relaxed/simple' } } ); 
$interface_policy{'10024'} = 'MYNETS';

3. Restart mail service

Expected Results:

DKIM signing should work.

Actual Results:

DKIM signing does not work until i patch amavisd as described in summary.

Version/Build:
Server 5.2
Server 5.3
Server 5.4

Configuration:
See configuration in attachment