From: mouss (mlist.onlyfree.fr)
Date: Mon Dec 03 2007 - 09:51:35 CST

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Brian Mathis wrote:
> Installing postfix on CentOS is a matter of:
> yum install postfix
> yum remove sendmail
>

# yum install postfix
....
postfix i386 2:2.2.10-1.1.el4.centos.mysql_pgsql.plus
...

# postconf -a
postconf: invalid option -- a
...

so this doesn't support dovecot sasl, and only supports cyrus sasl:

# ldd /usr/libexec/postfix/smtpd | grep sasl
         libsasl2.so.2 => /usr/lib/libsasl2.so.2 (0x0028c000)

Compare to this:

# rpm -q postfix
postfix-2.4.3-1.rhel4
# postconf -a
dovecot

> Those are the only commands you need to use. Unless you have a
> specific need to compile postfix, please use the yum/rpm packages
> instead.
>

you can get an srpm from:
        http://ftp.wl0.org/official/2.4/SRPMS/
and build an rpm. then either install the rpm or put it in a local yum
repository and use yum.

> There is rarely a need to compile a package when using a distro like
> Centos, and compiling is actually a bad thing, as it will break the
> package management tools.
>

care must indeed be taken with regard to dependencies such as mysql,
postgres, ldap, ... etc. otherwise, it is ok to rebuild postfix from
sources. That said, building an rpm will keep package mgmt working
correctly and would prevent problems if a dependency update requires a
rebuild.

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