The LDAP server is not reachable by the scanner. Both, inbound and outbound mailflow are stopped.
Inbound emails are getting this message in reply to RCPT TO command:
421 4.4.0 temporary issue, please retry your message later
Outbound emails are not delivered and stuck in outbound queue with error message "421 4.7.7 [internal] unable to process message at this time"
Connection to the LDAP server is not available.
The administrator credentials on the LDAP server is expired or the account is locked out.
The password for the Directory Integration bind credentials is incorrect.
Check the connection to the LDAP server.
Verify the account used for the Directory Integration server is not expired, locked out or incorrect.