I have over 30 years of in-depth experience architecting scaled system management solutions for up to 1000 UNIX systems (Linux, SunOS, HP-UX and more) using freeware tools. Using time-tested tools CFEngine, salt, perl, m4 and ksh, I can centralize configuration files and software installation for a large number of services and applications to increase predictability, availability and usability of your entire UNIX/Linux infrastructure.I also specialize in redundant, high volume mail server configurations using Sendmail and related tools for virus/spam detection, authentication, MUA services (POP, IMAP). Full setups to address new needs or problematic existing installations can be completed in less than 1 week for "Total Quiet".OS Experience: extensive experience with Linux (Red Hat) and SunOS 5 (Solaris 2) - additional experience with HP-UX, IRIX, Ultrix, BSD, AIXExtensive service and application experience: SMTP (Sendmail), MIMEDefang, Razor, SpamAssassin, ClamAV, SASL, POP3 (dovecot), wu-imapd/dovecot, mailman, DNS (BIND), NFS, NIS, NIS+, LDAP (OpenLDAP), Apache, Nginx, Jboss, Dynamo, postgresql, mysql, rdist, m4, C, ksh (Korn Shell), csh, Perl, cfengine, salt, rsync, nagios, cacti, jenkins