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

Provides :
appdata()
appdata(mozilla-thunderbird.appdata.xml)
application()
application(mozilla-thunderbird.desktop)
libcalbasecomps.so
libcalbasecomps.so(EXPORTED)
libdbusservice.so
libdbusservice.so(EXPORTED)
libldap60.so
libldif60.so
libmozalloc.so
libmozgnome.so
libmozgnome.so(EXPORTED)
libprldap60.so
libxul.so
libxul.so(xul38)
mimehandler(message/rfc822)
mimehandler(x-scheme-handler/mailto)
thunderbird
thunderbird(x86-32)

Requires :

libgobject-2.0.so.0
libXt.so.6
libnss3.so(NSS_3.9)
libnss3.so(NSS_3.10)
libdl.so.2
libXcomposite.so.1
rtld(GNU_HASH)
libnss3.so(NSS_3.12)
libm.so.6
libvpx.so.1
librt.so.1
libasound.so.2
libz.so.1
libpango-1.0.so.0
libgdk-x11-2.0.so.0
libldap60.so
sqlite => 3.8.10.1
libhunspell-1.3.so.0
libXrender.so.1
/bin/sh
libpthread.so.0(GLIBC_2.0)
libc.so.6(GLIBC_2.11)
nspr => 4.10.8
libgcc_s.so.1(GCC_4.0.0)
rpmlib(FileDigests) <= 4.6.0-1
libstdc++.so.6
libcairo.so.2
rpmlib(PartialHardlinkSets) <= 4.0.4-1
libssl3.so(NSS_3.14)
ld-linux.so.2(GLIBC_2.1)
libc.so.6(GLIBC_2.15)
libc.so.6
libxul.so(xul38)
libc.so.6(GLIBC_2.3.4)
libnssutil3.so(NSSUTIL_3.12.5)
libnss3.so(NSS_3.13)
libasound.so.2(ALSA_0.9)
libnss3.so(NSS_3.9.2)
libdl.so.2(GLIBC_2.1)
libsmime3.so(NSS_3.4.1)
libnssutil3.so(NSSUTIL_3.12.3)
libpthread.so.0(GLIBC_2.3.2)
libprldap60.so
mozilla-filesystem
librt.so.1(GLIBC_2.2)
libc.so.6(GLIBC_2.4)
libc.so.6(GLIBC_2.3.3)
libssl3.so(NSS_3.13)
libpthread.so.0(GLIBC_2.1)
libnss3.so(NSS_3.7)
libnss3.so(NSS_3.16.1)
libc.so.6(GLIBC_2.7)
nss => 3.19.1
libnss3.so(NSS_3.9.3)
libsmime3.so(NSS_3.13)
libXdamage.so.1
libc.so.6(GLIBC_2.1.2)
libnss3.so(NSS_3.2)
libjpeg.so.62
libgcc_s.so.1(GCC_3.4)
libxul.so
libsmime3.so(NSS_3.4)
libdbus-1.so.3
libplds4.so
libplc4.so
libfontconfig.so.1
libffi.so.6
libm.so.6(GLIBC_2.1)
libgcc_s.so.1(GCC_3.0)
/bin/bash
libssl3.so(NSS_3.4)
libpthread.so.0(GLIBC_2.2)
libpthread.so.0
libdbus-glib-1.so.2
libgtk-x11-2.0.so.0
libnss3.so(NSS_3.4)
libssl3.so(NSS_3.15)
libjpeg.so.62(LIBJPEG_6.2)
libgdk_pixbuf-2.0.so.0
libpangocairo-1.0.so.0
libgcc_s.so.1
libldif60.so
libnss3.so(NSS_3.12.3)
libssl3.so(NSS_3.15.4)
libc.so.6(GLIBC_2.1.3)
libsmime3.so(NSS_3.6)
libstdc++.so.6(GLIBCXX_3.4.5)
libnssutil3.so
libnss3.so(NSS_3.6)
libnss3.so(NSS_3.12.9)
libnss3.so(NSS_3.11)
libc.so.6(GLIBC_2.2)
libXext.so.6
libsmime3.so(NSS_3.2)
libgthread-2.0.so.0
libpthread.so.0(GLIBC_2.3.3)
libnss3.so(NSS_3.8)
libvpx => 1.3.0
rpmlib(CompressedFileNames) <= 3.0.4-1
libatk-1.0.so.0
libnss3.so(NSS_3.16.2)
libfreetype.so.6
libnss3.so(NSS_3.10.2)
libnss3.so(NSS_3.12.7)
libssl3.so(NSS_3.2)
libnss3.so(NSS_3.15)
libnssutil3.so(NSSUTIL_3.13)
libssl3.so(NSS_3.13.2)
libnssutil3.so(NSSUTIL_3.12)
libsmime3.so(NSS_3.16)
libstdc++.so.6(GLIBCXX_3.4)
libssl3.so
libgcc_s.so.1(GLIBC_2.0)
libstdc++.so.6(GLIBCXX_3.4.15)
libstdc++.so.6(GLIBCXX_3.4.9)
libgcc_s.so.1(GCC_3.3.1)
libpangoft2-1.0.so.0
libsqlite3.so.0
libnss3.so
libstartup-notification-1.so.0
libmozalloc.so
libc.so.6(GLIBC_2.2.4)
libnspr4.so
libgio-2.0.so.0
rpmlib(PayloadIsXz) <= 5.2-1
libXfixes.so.3
ld-linux.so.2
libc.so.6(GLIBC_2.0)
libz.so.1(ZLIB_1.2.0)
libdl.so.2(GLIBC_2.0)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libm.so.6(GLIBC_2.0)
libc.so.6(GLIBC_2.3)
libc.so.6(GLIBC_2.3.2)
libX11.so.6
libasound.so.2(ALSA_0.9.0rc4)
ld-linux.so.2(GLIBC_2.3)
libc.so.6(GLIBC_2.1)
libnss3.so(NSS_3.11.2)
libpthread.so.0(GLIBC_2.2.3)
libnss3.so(NSS_3.3)
libglib-2.0.so.0
libssl3.so(NSS_3.12.6)
libnss3.so(NSS_3.5)
libstdc++.so.6(CXXABI_1.3)
libsmime3.so

Content of RPM :
/usr/bin/thunderbird
/usr/lib/mozilla/extensions/{3550f703-e582-4d05-9a08-453d09bdfdc6}
/usr/lib/thunderbird
/usr/lib/thunderbird/LICENSE
/usr/lib/thunderbird/Throbber-small.gif
/usr/lib/thunderbird/application.ini
/usr/lib/thunderbird/blocklist.xml
/usr/lib/thunderbird/chrome
/usr/lib/thunderbird/chrome.manifest
/usr/lib/thunderbird/chrome/icons
/usr/lib/thunderbird/chrome/icons/default
/usr/lib/thunderbird/chrome/icons/default/default16.png
/usr/lib/thunderbird/chrome/icons/default/default22.png
/usr/lib/thunderbird/chrome/icons/default/default24.png
/usr/lib/thunderbird/chrome/icons/default/default256.png
/usr/lib/thunderbird/chrome/icons/default/default32.png
/usr/lib/thunderbird/chrome/icons/default/default48.png
/usr/lib/thunderbird/components
/usr/lib/thunderbird/components/components.manifest
/usr/lib/thunderbird/components/compreg.dat
/usr/lib/thunderbird/components/libdbusservice.so
/usr/lib/thunderbird/components/libmozgnome.so
/usr/lib/thunderbird/components/xpti.dat
/usr/lib/thunderbird/crashreporter
/usr/lib/thunderbird/crashreporter.ini
/usr/lib/thunderbird/defaults
/usr/lib/thunderbird/defaults/messenger
/usr/lib/thunderbird/defaults/messenger/mailViews.dat
/usr/lib/thunderbird/defaults/pref
/usr/lib/thunderbird/defaults/pref/all-redhat.js
There is 203 files more in these RPM.