Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
config(postfix-bdb)
group(maildrop)
group(postfix)
libpostfix-dns.so()(64bit)
libpostfix-global.so()(64bit)
libpostfix-master.so()(64bit)
libpostfix-tls.so()(64bit)
libpostfix-util.so()(64bit)
postfix-bdb
postfix-bdb(x86-64)
smtp_daemon
user(postfix)

Requires :

/bin/bash
/bin/sh
/bin/sh
/bin/sh
/bin/sh
/bin/sh
/bin/sh
/usr/bin/cmp
/usr/bin/perl
config(postfix-bdb) = 3.9.0-Virt.150400.484.1
coreutils
diffutils
ed
ed
ed
ed
fillup
grep
group(mail)
iproute2
libc.so.6()(64bit)
libc.so.6(GLIBC_2.11)(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libc.so.6(GLIBC_2.17)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3)(64bit)
libc.so.6(GLIBC_2.3.2)(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libc.so.6(GLIBC_2.7)(64bit)
libcrypto.so.1.1()(64bit)
libcrypto.so.1.1(OPENSSL_1_1_0)(64bit)
libcrypto.so.1.1(OPENSSL_1_1_1b)(64bit)
libdb-4.8.so()(64bit)
libdl.so.2()(64bit)
libdl.so.2(GLIBC_2.2.5)(64bit)
libicudata.so.suse65.1()(64bit)
libicui18n.so.suse65.1()(64bit)
libicuuc.so.suse65.1()(64bit)
libnsl.so.2()(64bit)
libnsl.so.2(LIBNSL_1.0)(64bit)
libpcre2-8.so.0()(64bit)
libpostfix-dns.so()(64bit)
libpostfix-global.so()(64bit)
libpostfix-master.so()(64bit)
libpostfix-tls.so()(64bit)
libpostfix-util.so()(64bit)
libresolv.so.2()(64bit)
libresolv.so.2(GLIBC_2.2.5)(64bit)
libsasl2.so.3()(64bit)
libssl.so.1.1()(64bit)
libssl.so.1.1(OPENSSL_1_1_0)(64bit)
libssl.so.1.1(OPENSSL_1_1_1)(64bit)
perl
perl
perl
perl
permissions
permissions
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PartialHardlinkSets) <= 4.0.4-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsXz) <= 5.2-1
sysuser-shadow >= 3.2
user(nobody)

Content of RPM :
/etc/pam.d/smtp
/etc/permissions.d/postfix
/etc/permissions.d/postfix.paranoid
/etc/postfix
/etc/postfix/LICENSE
/etc/postfix/TLS_LICENSE
/etc/postfix/access
/etc/postfix/aliases
/etc/postfix/bounce.cf.default
/etc/postfix/canonical
/etc/postfix/dynamicmaps.cf
/etc/postfix/generic
/etc/postfix/header_checks
/etc/postfix/helo_access
/etc/postfix/main.cf
/etc/postfix/main.cf.default
/etc/postfix/makedefs.out
/etc/postfix/master.cf
/etc/postfix/openssl_postfix.conf.in
/etc/postfix/post-install
/etc/postfix/postfix-files
/etc/postfix/postfix-script
/etc/postfix/postfix-tls-script
/etc/postfix/postfix-wrapper
/etc/postfix/postmulti-script
/etc/postfix/relay
/etc/postfix/relay_ccerts
/etc/postfix/relocated
/etc/postfix/sasl_passwd
/etc/postfix/sender_canonical
There is 189 files more in these RPM.