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Need to install Sendmail 8.14.5 with the following:
Turn src. into SRC.RPM enabling all possible features to later rebuild on any RHLE distro (centos..)
Enable procedures and mechanism to setup authentication login for POP/IMAP/SMTP.
Secure system/installation to avoid openrelays and any security breach.
Enable SPF, SRS, DomainKeys, DKIM and DMARC (last one if possible) to SINGOUT all sent emails.
IP Rotation system to achieve:
Given sequence rotation
Rotation must be native and not use iptables.
Detalied instructions on how to replicate every step in detalied and a SCRIPT to do automatically installation; do this is REQUIRED.