I've got a big problem with postfix/smtpd.
All of a sudden I get this error when trying to send a mail:

Dec 21 16:31:33 mail postfix/smtpd[1576]: fatal: parameter "smtpd_recipient_restrictions": specify at least one working instance of: check_relay_domains, reject_unauth_destination, reject, defer or defer_if_permit
Dec 21 16:31:34 mail postfix/master[32341]: warning: process /opt/zimbra/postfix/libexec/smtpd pid 1576 exit status 1
Dec 21 16:31:34 mail postfix/master[32341]: warning: /opt/zimbra/postfix/libexec/smtpd: bad command startup -- throttling
I'm not quite sure when this problem occured, but yesterday I was working to get the backup script for open source to work, and I know I had some trouble with the mail that is supposed to be mailed after a backup, because I couldn't install mailx because it's not a available packade anymore, so I chose bsd-mailx I finally got it to work.
But if that has something to do with the error I don't know.

zimbra@mail:~/postfix/conf$ cat main.cf
sender_canonical_maps = proxy:ldap:/opt/zimbra/conf/ldap-scm.cf
virtual_alias_domains = proxy:ldap:/opt/zimbra/conf/ldap-vad.cf
lmtp_connection_cache_time_limit = 4s
recipient_delimiter =
smtpd_tls_cert_file = /opt/zimbra/conf/smtpd.crt
smtpd_tls_auth_only = yes
myhostname = mail.bispp.se
virtual_mailbox_domains = proxy:ldap:/opt/zimbra/conf/ldap-vmd.cf
mydestination = localhost
mailbox_size_limit = 0
setgid_group = postdrop
smtpd_client_restrictions = reject_unauth_pipelining
queue_run_delay = 300s
minimal_backoff_time = 300s
virtual_alias_maps = proxy:ldap:/opt/zimbra/conf/ldap-vam.cf
transport_maps = proxy:ldap:/opt/zimbra/conf/ldap-transport.cf
message_size_limit = 52224000
sendmail_path = /opt/zimbra/postfix/sbin/sendmail
broken_sasl_auth_clients = yes
lmtp_connection_cache_destinations =
alias_maps = hash:/etc/aliases
manpage_directory = /opt/zimbra/postfix/man
policy_time_limit = 3600
smtpd_helo_required = yes
in_flow_delay = 1s
daemon_directory = /opt/zimbra/postfix/libexec
maximal_backoff_time = 4000s
virtual_transport = error
mynetworks =
bounce_queue_lifetime = 5d
smtpd_recipient_restrictions =
lmtp_host_lookup = dns
smtpd_tls_loglevel = 1
relayhost =
disable_dns_lookups = no
always_add_missing_headers = yes
smtpd_sasl_authenticated_header = no
mail_owner = postfix
virtual_mailbox_maps = proxy:ldap:/opt/zimbra/conf/ldap-vmm.cf
content_filter = smtp-amavis:[]:10024
smtpd_tls_security_level = may
mailq_path = /opt/zimbra/postfix/sbin/mailq
header_checks =
queue_directory = /opt/zimbra/data/postfix/spool
newaliases_path = /opt/zimbra/postfix/sbin/newaliases
smtpd_data_restrictions = reject_unauth_pipelining
local_header_rewrite_clients = permit_mynetworks,permit_sasl_authenticated
smtpd_reject_unlisted_recipient = no
propagate_unmatched_extensions = canonical
command_directory = /opt/zimbra/postfix/sbin
smtpd_tls_key_file = /opt/zimbra/conf/smtpd.key
smtpd_sasl_auth_enable = yes
If I understand it right the smtpd_recipient_restrictions should be taken from /opt/zimbra/conf/postfix_recipient_restrictions.cf which exists and contains:
%%contains VAR:zimbraMtaRestriction reject_invalid_hostname%%
%%contains VAR:zimbraMtaRestriction reject_non_fqdn_hostname%%
%%contains VAR:zimbraMtaRestriction reject_non_fqdn_sender%%
%%contains VAR:zimbraMtaRestriction reject_unknown_client%%
%%contains VAR:zimbraMtaRestriction reject_unknown_hostname%%
%%contains VAR:zimbraMtaRestriction reject_unknown_sender_domain%%
%%explode reject_rbl_client VAR:zimbraMtaRestrictionRBLs%%
%%contains VAR:zimbraMtaRestriction check_policy_service unix:private/policy%%
What to do?!