telnet <email server ip address> 25
Trying <email server ip address>…
Connected to <email server ip address>.
Escape character is ‚^]‘.
220 <email server dns address> ESMTP Postfix
EHLO <irgendein text>
250-<email server dns address>
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH DIGEST-MD5 NTLM CRAM-MD5 LOGIN PLAIN
250-AUTH=DIGEST-MD5 NTLM CRAM-MD5 LOGIN PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
mail from: <sender email address>
250 2.1.0 Ok
RCPT TO: < recepient email address>
250 2.1.5 Ok
data
subject: <text>
<text>
.
250 2.0.0 Ok: queued as 733C4220D64
quit
221 2.0.0 Bye