Thank you for the information.
Code from GitHub. Looking at the nssmtpd.c code, we could not find any code referencing ID/password for authentication.
Sharing information
here is a bash script we use to test communications to our email server.
#!/bin/bash
server="smtp.hostname.com"
port=587
username="username"
password="password_here"
from="mailto:info@hostname.com";
to="mailto:user@anotherhostname.com";
subject="Test Email"
message="Test email sent from hostname.com:/path/mail587 bash script using OpenSSL."
# Encode username and password in base64
b64_username=$(echo -n ${username} | base64)
b64_password=$(echo -n ${password} | base64)
# Establish connection and send email
{
echo "EHLO ${server}"
sleep 1
echo "STARTTLS"
sleep 1
echo "AUTH LOGIN"
sleep 1
echo "${b64_username}"
sleep 1
echo "${b64_password}"
sleep 1
echo "MAIL FROM:<${from}>"
sleep 1
echo "RCPT TO:<${to}>"
sleep 1
echo "DATA"
sleep 1
echo "Subject: ${subject}"
echo
echo "${message}"
echo "."
sleep 1
echo "QUIT"
} | openssl s_client -starttls smtp -connect ${server}:${port} -crlf -ign_eof
Have a good weekend.
