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

Provides :
config(dovecot)
dovecot-gssapi
dovecot-ldap
dovecot-mysql
dovecot-pgsql
dovecot-sqlite
lib01_acl_plugin.so
lib02_lazy_expunge_plugin.so
lib10_quota_plugin.so
lib11_imap_quota_plugin.so
lib11_trash_plugin.so
lib20_convert_plugin.so
lib20_expire_plugin.so
lib20_fts_plugin.so
lib20_mail_log_plugin.so
lib20_mbox_snarf_plugin.so
lib20_zlib_plugin.so
lib21_fts_squat_plugin.so
libauthdb_ldap.so
libdriver_mysql.so
libdriver_pgsql.so
libdriver_sqlite.so
libmech_gssapi.so
dovecot

Requires :

libcrypto.so.6
libdriver_pgsql.so
libdl.so.2(GLIBC_2.1)
/usr/sbin/userdel
libdl.so.2
rtld(GNU_HASH)
lib02_lazy_expunge_plugin.so
lib11_trash_plugin.so
libm.so.6
libdb-4.3.so
/sbin/service
libsqlite3.so.0
libc.so.6(GLIBC_2.4)
libmysqlclient.so.15
initscripts
libz.so.1
libpq.so.4
lib10_quota_plugin.so
libc.so.6(GLIBC_2.1.3)
libgssapi_krb5.so.2
libkrb5.so.3
libkrb5.so.3(krb5_3_MIT)
lib20_zlib_plugin.so
lib21_fts_squat_plugin.so
/sbin/chkconfig
lib20_mail_log_plugin.so
lib20_expire_plugin.so
libk5crypto.so.3
/usr/sbin/groupdel
libc.so.6(GLIBC_2.2)
libssl.so.6
libc.so.6(GLIBC_2.0)
libdl.so.2(GLIBC_2.0)
libmysqlclient.so.15(libmysqlclient_15)
/usr/sbin/useradd
/bin/sh
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
openssl
libpam.so.0(LIBPAM_1.0)
libbz2.so.1
libc.so.6(GLIBC_2.3)
libdriver_sqlite.so
lib20_fts_plugin.so
libc.so.6(GLIBC_2.3.2)
libpam.so.0
libgssapi_krb5.so.2(gssapi_krb5_2_MIT)
rpmlib(CompressedFileNames) <= 3.0.4-1
libcrypt.so.1
lib20_convert_plugin.so
rpmlib(VersionedDependencies) <= 3.0.3-1
libc.so.6(GLIBC_2.1)
libldap-2.3.so.0
libcrypt.so.1(GLIBC_2.0)
libcom_err.so.2
libdriver_mysql.so
config(dovecot) = 1:1.1.20-1_98.el5
lib01_acl_plugin.so
/bin/bash
libc.so.6
lib20_mbox_snarf_plugin.so
libc.so.6(GLIBC_2.3.4)

Content of RPM :
/etc/dovecot.conf
/etc/logrotate.d/dovecot
/etc/pam.d/dovecot
/etc/pki/dovecot
/etc/pki/dovecot/certs
/etc/pki/dovecot/certs/dovecot.pem
/etc/pki/dovecot/dovecot-openssl.cnf
/etc/pki/dovecot/private
/etc/pki/dovecot/private/dovecot.pem
/etc/rc.d/init.d/dovecot
/etc/sysconfig/dovecot
/usr/lib/dovecot
/usr/lib/dovecot/auth
/usr/lib/dovecot/auth/libauthdb_ldap.so
/usr/lib/dovecot/auth/libdriver_mysql.so
/usr/lib/dovecot/auth/libdriver_pgsql.so
/usr/lib/dovecot/auth/libdriver_sqlite.so
/usr/lib/dovecot/auth/libmech_gssapi.so
/usr/lib/dovecot/dict
/usr/lib/dovecot/dict/libdriver_mysql.so
/usr/lib/dovecot/dict/libdriver_pgsql.so
/usr/lib/dovecot/dict/libdriver_sqlite.so
/usr/lib/dovecot/imap
/usr/lib/dovecot/imap/lib01_acl_plugin.so
/usr/lib/dovecot/imap/lib02_lazy_expunge_plugin.so
/usr/lib/dovecot/imap/lib10_quota_plugin.so
/usr/lib/dovecot/imap/lib11_imap_quota_plugin.so
/usr/lib/dovecot/imap/lib11_trash_plugin.so
/usr/lib/dovecot/imap/lib20_convert_plugin.so
/usr/lib/dovecot/imap/lib20_expire_plugin.so
There is 238 files more in these RPM.