Hello there,
I am an experienced Linux Professional exploring open-source solutions from last 5 years.
I have good hands on setting up smtp server (postfix, sendmail, exim, vmware zimbra)
I have already setup a no. of email servers in recent past with well header optimization & domain records (spf, dkim, ptr) to avoid the chances of mail getting spam.
Although Freelancer.com is new to me but I am active on other work portals from quite long.
You can add me on skype as live:tech-hub for any query.
Thanks!