User Tools

Site Tools


howtos:how_do_i_connect_to_a_secure_smtp_server

Use these commands to verify you secure TLS/SSL smtp servers:

# port 25/TLS; use same syntax for port 587
openssl s_client -connect remote.host:25 -starttls smtp

# port 465/SSL
openssl s_client -connect remote.host:465
howtos/how_do_i_connect_to_a_secure_smtp_server.txt · Last modified: 02/12/2018 20:34 by 127.0.0.1