I have 9+ years of experience in Messaging. Installed and configured distributed systems ranging from userbase of 3000 to 50K with multiserver install for ISP and enterprise.
- Qmail, postfix, zimbra, sendmail
-Email Platforms which includes deployment, Tuning and Migration.
-Been working on Redhat clustering - load balancing and high availability
-monitoring (cacti, nagios, snmp,etc.)
-Shell scripting and Perl scripting
- DNS ( Bind , TinyDNS )
- Email security using trendmicro and other Antiabuse softwares
- nginx reverse Proxy