fix: restore user domain address verification

Address verification, removed in 1.7.0, is still useful to ensure that
when an LDAP account is removed, Postfix handles Dovecot's error with a
SMTP error, and doesn't bounce the message.

Author: DavidePrincipi

postfix/usr/local/bin/reload-config

@@ -41,10 +41,12 @@ if [ -n "${POSTFIX_ORIGIN}" ]; then
     tmpl_virtual_mailbox_domains=${POSTFIX_ORIGIN}
     tmpl_virtual_mailbox_maps="inline:{{ vmail@${POSTFIX_ORIGIN} = vmail }}, "'proxy:ldap:$meta_directory/laddusers-origin.cf'
     tmpl_myorigin=${POSTFIX_ORIGIN}
+    tmpl_verify_recipient_address="check_recipient_access inline:{{ ${POSTFIX_ORIGIN} = reject_unverified_recipient }}"
 else
     tmpl_virtual_mailbox_domains=
     tmpl_virtual_mailbox_maps=
     tmpl_myorigin='$myhostname'
+    tmpl_verify_recipient_address=
 fi
 
 tmpl_milters="${POSTFIX_MILTERS}"

postfix/usr/local/lib/templates/main.cf

@@ -111,6 +111,7 @@ smtpd_relay_restrictions =
 
 smtpd_recipient_restrictions =
   reject_non_fqdn_recipient,
+  ${tmpl_verify_recipient_address},
 
 #
 # TLS configuration