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

Provides :
evolution-ews
evolution-ews(x86-64)
libcamelews-priv.so()(64bit)
libcamelews.so()(64bit)
libebookbackendews.so()(64bit)
libecalbackendews.so()(64bit)
libevolution-ews.so()(64bit)

Requires :

libgdk-3.so.0()(64bit)
libplds4.so()(64bit)
libcairo-gobject.so.2()(64bit)
libxml2.so.2(LIBXML2_2.4.30)(64bit)
libedata-book-1.2.so.25()(64bit)
libnss3.so()(64bit)
rtld(GNU_HASH)
libsecret-1.so.0()(64bit)
libgtk-3.so.0()(64bit)
libgio-2.0.so.0()(64bit)
libpangocairo-1.0.so.0()(64bit)
libevolution-shell.so()(64bit)
evolution-data-server => 3.28.5
libsqlite3.so.0()(64bit)
libcamelews-priv.so()(64bit)
libsmime3.so()(64bit)
libnssutil3.so()(64bit)
evolution-ews-langpacks = 3.28.5-5.el7
libical.so.3()(64bit)
libgobject-2.0.so.0()(64bit)
libgmodule-2.0.so.0()(64bit)
libedataserverui-1.2.so.2()(64bit)
libxml2.so.2(LIBXML2_2.6.0)(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libedata-cal-1.2.so.28()(64bit)
libebackend-1.2.so.10()(64bit)
libmspack.so.0()(64bit)
libxml2.so.2(LIBXML2_2.9.0)(64bit)
libnspr4.so()(64bit)
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
libevolution-mail.so()(64bit)
libxml2.so.2()(64bit)
libicalss.so.3()(64bit)
libsoup-2.4.so.1()(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libicalvcal.so.3()(64bit)
libglib-2.0.so.0()(64bit)
libgdk_pixbuf-2.0.so.0()(64bit)
libpango-1.0.so.0()(64bit)
libevolution-mail-composer.so()(64bit)
libc.so.6()(64bit)
libebook-1.2.so.19()(64bit)
libebook-contacts-1.2.so.2()(64bit)
libjavascriptcoregtk-4.0.so.18()(64bit)
libplc4.so()(64bit)
libm.so.6(GLIBC_2.2.5)(64bit)
evolution => 3.28.5
libmspack => 0.4
libemail-engine.so()(64bit)
libevolution-ews.so()(64bit)
rpmlib(PayloadIsXz) <= 5.2-1
libatk-1.0.so.0()(64bit)
libevolution-calendar.so()(64bit)
libdl.so.2()(64bit)
libedataserver-1.2.so.23()(64bit)
libssl3.so()(64bit)
libcamel-1.2.so.61()(64bit)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libpthread.so.0(GLIBC_2.2.5)(64bit)
libpthread.so.0()(64bit)
libecal-1.2.so.19()(64bit)
libc.so.6(GLIBC_2.7)(64bit)
libcairo.so.2()(64bit)
libwebkit2gtk-4.0.so.37()(64bit)
libm.so.6()(64bit)
libevolution-mail-formatter.so()(64bit)
libevolution-util.so()(64bit)
/sbin/ldconfig

Content of RPM :
/usr/lib64/evolution-data-server/addressbook-backends/libebookbackendews.so
/usr/lib64/evolution-data-server/calendar-backends/libecalbackendews.so
/usr/lib64/evolution-data-server/camel-providers/libcamelews.so
/usr/lib64/evolution-data-server/camel-providers/libcamelews.urls
/usr/lib64/evolution-data-server/registry-modules/module-ews-backend.so
/usr/lib64/evolution-ews/libcamelews-priv.so
/usr/lib64/evolution-ews/libevolution-ews.so
/usr/lib64/evolution/modules/module-ews-configuration.so
/usr/share/doc/evolution-ews-3.28.5
/usr/share/doc/evolution-ews-3.28.5/NEWS
/usr/share/doc/evolution-ews-3.28.5/README
/usr/share/evolution-data-server/ews/windowsZones.xml
/usr/share/evolution/errors/module-ews-configuration.error
/usr/share/licenses/evolution-ews-3.28.5
/usr/share/licenses/evolution-ews-3.28.5/COPYING
/usr/share/metainfo/org.gnome.Evolution-ews.metainfo.xml