I have installed a mail server in a LXC container. I was able to attach FQDN, MX record, A record, SPF record, DKIM record, DMARC record -CORRECTLY and able to send any email to any domain.
But I am unable to receive any email to my server from any other domain. Mydomain to Mydomain receiving /sending of emails- both are working fine .
I tried this also : http://www.postfix.org/postconf.5.html#proxy_interfaces but no luck.
I am using nginx as proxy server. I also tried to find out any tutorial about using LXC container as mailserver but no good luck.
Anybody can help me in configuring postfix in lxc container or any other way out.