alexlai@opi58G:~$ telnet h2jammy.yushei.net 25
Trying 59.126.118.193...
Connected to h2jammy.yushei.net.
Escape character is '^]'.
220 h2Jammy.yushei.net ESMTP Postfix (Ubuntu)
EHLO yushei.me
250-h2Jammy.yushei.net
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-SMTPUTF8
250 CHUNKING
MAIL FROM: alexlai@yushei.me
250 2.1.0 Ok
RCPT TO: alexlai@h2Jammy.yushei.net
250 2.1.5 Ok
RCPT TO: rai.sousuke@gmail.com
454 4.7.1 <rai.sousuke@gmail.com>: Relay access denied
RCPT TO: alexlai@munetaka.me
454 4.7.1 <alexlai@munetaka.me>: Relay access denied
DATA
354 End data with <CR><LF>.<CR><LF>
Subject: telent from remote network
time is 2024-04-28 08:30
Hi
Bye
.
250 2.0.0 Ok: queued as E91B5402C2823
quit
221 2.0.0 Bye
Connection closed by foreign host.