 File redirection
Put this into a file:
mcf zimbraMtaRestriction reject_invalid_hostname \
zimbraMtaRestriction reject_non-fqdn_hostname \
zimbraMtaRestriction reject_non_fqdn_sender \
zimbraMtaRestriction "reject_rbl_client dnsbl.njabl.org" \
zimbraMtaRestriction "reject_rbl_client opm.blitzed.org" \
zimbraMtaRestriction "reject_rbl_client relays.ordb.org" \
zimbraMtaRestriction "reject_rbl_client cbl.abuseat.org" \
zimbraMtaRestriction "reject_rbl_client bl.spamcop.net" \
zimbraMtaRestriction "reject_rbl_client dnsbl.sorbs.net"
Then, on each host, as the zimbra user:
zmprov < filename |