-
Type telnet 25,and then press ENTER.
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Type EHLO , and then press ENTER.
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Type AUTH LOGIN. The server responds with an encrypted prompt for your user name.
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Enter your user name encrypted in base 64. You can use one of several tools that are available to encode your user name.
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The server responds with an encrypted base 64 prompt for your password. Enter your password encrypted in base 64.
-
Type MAIL FROM:@domain.com>, and then press ENTER. If the sender is not permitted to send mail, the SMTP server returns an error.
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Type RCPT TO:@remotedomain.com>,and then press ENTER.If the recipient is not a valid recipient or the server does not accept mail for this domain, the SMTP server returns an error.
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Type DATA.
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If desired, type message text, press ENTER, type a period (.), and then press ENTER again.
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If mail is working properly, you should see a response similar to the following indicating that mail is queued for delivery:
参考:
https://technet.microsoft.com/en-us/library/aa995718(v=exchg.65).aspx
###############
Connected to smtp.qq.com.
Escape character is '^]'.
220 **********************************************************
ehlo qq
250-CNSH043634 Hello a [10.10.100.65]
250-SIZE 10485760
250-8BITMIME
250-PIPELINING
250-AUTH LOGIN
250 XXXA
auth login
334 VXNlcm5hbWU6
Y3VpemhpbGlhbmczNDQ= #这位是base64编码后的账号
334 UGFzc3dvcmQ6
Q3psMTEwMTIz #这位是base64编码后的密码
235 Authentication succeeded
MAIL FROM:73xxxxxx@qq.com
250 OK
RCPT TO:xxxx344@qq.com
250 Accepted
DATA
354 Enter message, ending with "." on a line by itself
hehhe
ceshi
.
250 OK id=1bRdmd-0008Qm-Nm
Connection closed by foreign host.
#################
