How to disable IPv6 for Exim4 that comes with Vesta Panel

I had a server which has both IPv4 and IPv6 and they were working perfectly fine. I had installed Vesta CP which is an amazing control panel application and it was working just great. But there was only one problem with Exim4. It was not sending emails properly to Gmail. Mails sent to gmail were… Continue reading How to disable IPv6 for Exim4 that comes with Vesta Panel