Send emails via Telnet (SMTP authentication supported)

Source: Internet
Author: User

Send emails via Telnet (SMTP authentication supported)

1. Connect to the remote server via Telnet


Telnet 25


Telnet SMTP

2. Say hello to the server


The server should return

If the server SMTP needs to be verified, perform step 3; otherwise, proceed to step 4.
3. Input


Will prompt you once
334 vxnlcm5hbwu6
334 ugfzc3dvcmq6
The following message prompts you to enter the user name and password. The information is base64-encoded.
The entered username and password must also be encoded. Here is an encoding and decoding tool.
After SMTP authentication is passed
235 2.0.0 authentication successful
4. Write a letter

Mail from: <>


Rcpt to: <>

Are sent from
If it is normal, 250 should be returned


Start writing

Subject: Test mail
Test email

250 2.0.0 OK: queued as 93223136c8e


The Postfix is successfully tried.

Popularity: 37%

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