• Install and maintain corporate email servers using Sendmail and Postfix on Solaris, HP-UX, Linux, Redhat, Fedora and Ubuntu.
  • Modify the Sendmail.cf and master.cf / main.cf configuration files for specific needs.
  • Setup aliases and virtual.
  • Setup multi virtual domains on single server.
  • Setup DNS MX records.
  • Setup domain wide mail forwarding.
  • Setup email encryption SASL.
  • Setup SPF, DKIM and DMARC.

By examining the headers of emails, you can double check how DKIM and DMARC and SPF are working and they are working correctly.