[OpenSSL][telnet] smtp starttls 테스트
Updated:
OpenSSL
openssl s_client -host ${host} -port 25 -debug -starttls smtp
telnet
telnet ${host} 25
starttls
Updated:
openssl s_client -host ${host} -port 25 -debug -starttls smtp
telnet ${host} 25
starttls