2022. 12. 17. 17:01 WorkHolic
SMTP 테스트(bash and telnet to test an email)
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SMTP 테스트(bash and telnet to test an email)
[[ $4 ]] || {
printf "Usage\n\t$0 <domain> <email> <from_email> <rcpt_email>\n"
exit 1
}
{
sleep 1
echo "helo $2"
sleep 0.5
echo "mail from:<$3>"
sleep 0.5
echo "rcpt to:<$4>"
echo
} | telnet $1 25 |
grep -q "Unknown user" &&
echo "Invalid email" ||
echo "Valid email"
Usage :
./script.sh domain email from_email rcpt_email
https://stackoverflow.com/questions/14326350/bash-and-telnet-to-test-an-email
bash and telnet to test an email
I'm trying to find out whether an email address is valid. I've accomplished this by usign telnet, see below $ telnet mail.example.com 25 Trying 0.0.0.0... Connected to mail.example.com. Escape
stackoverflow.com
#SMTP #메일테스트 #bash
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