Securing Email with Cisco Email Security Appliance (SESA) — Question 107

A network administrator notices that there are a high number of queries to the LDAP server. The mail logs show an entry “550 Too many invalid recipients | Connection closed by foreign host.”

Which feature must be used to address this?

Answer options

• A. DHAP
• B. SBRS
• C. LDAP
• D. SMTP

Correct answer: A

Explanation

The correct answer is A. DHAP, which helps manage and filter directory access to reduce unnecessary queries to the LDAP server. Options B (SBRS), C (LDAP), and D (SMTP) do not directly address the issue of excessive queries and invalid recipient errors, making them unsuitable solutions in this scenario.