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

Provides :
kmailtransport
kmailtransport(x86-64)
libKPim6MailTransport.so.6()(64bit)

Requires :

libKF6Completion.so.6()(64bit)
libKF6ConfigCore.so.6()(64bit)
libKF6ConfigGui.so.6()(64bit)
libKF6ConfigWidgets.so.6()(64bit)
libKF6CoreAddons.so.6()(64bit)
libKF6I18n.so.6()(64bit)
libKF6KIOCore.so.6()(64bit)
libKF6KIOWidgets.so.6()(64bit)
libKF6WidgetsAddons.so.6()(64bit)
libKPim6GAPICore.so.6()(64bit)
libKPim6MailTransport.so.6()(64bit)
libKPim6SMTP.so.6()(64bit)
libQt6Core.so.6()(64bit)
libQt6Core.so.6(Qt_6)(64bit)
libQt6Core.so.6(Qt_6.7)(64bit)
libQt6DBus.so.6()(64bit)
libQt6DBus.so.6(Qt_6)(64bit)
libQt6Gui.so.6()(64bit)
libQt6Gui.so.6(Qt_6)(64bit)
libQt6Network.so.6()(64bit)
libQt6Network.so.6(Qt_6)(64bit)
libQt6Widgets.so.6()(64bit)
libQt6Widgets.so.6(Qt_6)(64bit)
libc.so.6()(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libc.so.6(GLIBC_ABI_DT_RELR)(64bit)
libqt6keychain.so.1()(64bit)
libstdc++.so.6()(64bit)
libstdc++.so.6(CXXABI_1.3)(64bit)
libstdc++.so.6(CXXABI_1.3.9)(64bit)
libstdc++.so.6(GLIBCXX_3.4)(64bit)
libstdc++.so.6(GLIBCXX_3.4.30)(64bit)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsZstd) <= 5.4.18-1
rtld(GNU_HASH)

Content of RPM :
/usr/lib/.build-id
/usr/lib/.build-id/3e
/usr/lib/.build-id/3e/a5fe15fc8b143d4d6acb078921ed1460393a6a
/usr/lib/.build-id/4a
/usr/lib/.build-id/4a/90ba0fd8e3f79589549df6bce86e588cc32aab
/usr/lib64/libKPim6MailTransport.so.6
/usr/lib64/libKPim6MailTransport.so.6.2.2
/usr/lib64/qt6/plugins/pim6
/usr/lib64/qt6/plugins/pim6/mailtransport/mailtransport_smtpplugin.so
/usr/share/config.kcfg/mailtransport.kcfg
/usr/share/licenses/kmailtransport
/usr/share/licenses/kmailtransport/BSD-3-Clause.txt
/usr/share/licenses/kmailtransport/CC0-1.0.txt
/usr/share/licenses/kmailtransport/LGPL-2.0-or-later.txt
/usr/share/licenses/kmailtransport/LGPL-2.1-or-later.txt
/usr/share/locale/ar/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/ast/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/be/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/bg/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/bs/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/ca/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/ca@valencia/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/cs/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/da/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/de/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/el/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/en_GB/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/eo/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/es/LC_MESSAGES/libmailtransport6.mo
/usr/share/locale/et/LC_MESSAGES/libmailtransport6.mo
There is 47 files more in these RPM.