I'm having a hard time with the following configuration parameter:
$rcmail_config['smtp_helo_host'] = '';
My instance of RoundCube is installed on my 'web' server which is:
http://www.mydomain.tld [192.168.0.201]
My mail server running Postfix is installed on 'mail.mydomain.tld' [192.168.0.200]. Both machines are on the same network and subnet so my question is what is the correct configuration that should be used for RoundCube to announce HELO/EHLO to my mail server?
My FQDN on my web server is '
www.mydomain.tld' so what should I configure for 'smtp_helo_host'?