Running Zimbra 4.5 OpenSource

For whatever (poor) reason, /tmp was not on its own file system and therefore part of /. There was a period of about 3 hours before a new /tmp file system was created and everything was re-started. In that window, no one has received any e-mails.

We do have a backup MX record in DNS and I've flushed anything out of that server, however it looks like (from the logs) that postfix was receiving e-mails on the zimbra box but not able to process them. Is it possible to re-queue these missing e-mails or are they gone?

Code:
Oct 23 18:58:31 server1 postfix/smtpd[18005]: fatal: parameter "smtpd_recipient_restrictions": specify at least one working instance of: check_relay_domains, reject_unauth_destination, reject, defer or defer_if_permit
Oct 23 18:58:32 server1 postfix/master[15707]: warning: process /opt/zimbra/postfix-2.2.9/libexec/smtpd pid 18005 exit status 1
Oct 23 18:58:32 server1 postfix/master[15707]: warning: /opt/zimbra/postfix-2.2.9/libexec/smtpd: bad command startup -- throttling
Oct 23 18:59:32 server1 postfix/smtpd[18035]: fatal: parameter "smtpd_recipient_restrictions": specify at least one working instance of: check_relay_domains, reject_unauth_destination, reject, defer or defer_if_permit
Oct 23 18:59:33 server1 postfix/master[15707]: warning: process /opt/zimbra/postfix-2.2.9/libexec/smtpd pid 18035 exit status 1