Sendmail is installed as default MTA. How do I switch to Postfix as MTA?
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If you are using RHEL you need to install the rpm, which will be available on the Server directory of one of your 5 installation CDs or the Server directory on the DVD, called "system-switch-mail-<press tab key >.rpm. I think it's system-switch-mail-gnome rpm package...Install it and then type
[ ]#system-switch-mail
and now you have the option to switch between the 2 MTAs.
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