Dịch vụ Email sử dụng mã nguồn mở
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trunghq@ubuntu:~$ telnet 127.0.0.1 25
Trying 127.0.0.1
Connected to 127.0.0.1.
Escape character is '^]'.
220 ubuntu.localdomain ESMTP Postfix (Ubuntu)
helo trunghq.com
250 ubuntu.localdomain
MAIL FROM:
250 2.1.0 Ok
RCPT TO:
250 2.1.5 Ok
DATA
354 End data with <CR><LF>.<CR><LF>
Subject:Thu gui thu tu telnet
Day la mot buc thu gui tu telnet
.
250 2.0.0 Ok: queued as 913E010089F
quit
221 2.0.0 Bye
Connection closed by foreign host.
trunghq@ubuntu:~$ tail -3 /var/log/mail.log
May 18 07:34:56 ubuntu postfix/smtpd[3125]: disconnect from localhost[127.0.0.1]
May 18 07:35:02 ubuntu postfix/smtp[3171]: 913E010089F: to=<>, relay=gmail-smtp l.google.com
[209.85.222.80]:25, delay=143, delays=126/0.02/13/3.5, dsn=2.0.0, status=sent (250 2.0.0 OK 1274193114
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