Проверка почтового сервера с помощью Telnet



telnet mail.yourdomain.com 110
Connects to the pop3 server

user YourUsernameHere
This submits your username to the server

pass YourPasswordHere
This submits your password to the server



This will list the emails in the inbox, including their ID number, and size

if you want to read an email from the list, type retr # where # is the number of the email you want read.  For example, to read the 2nd messge in the list, retr 2

This will delete an email.  After you issue the dele command, you put a number.  This is the number of the email you want to delete.  So for example, to delete message 1, type dele 1

Once you have finished, you need to make sure you type quit, otherwise it does not save the changes you made.




telnet mail.yourdomain.com 143
This opens the session to the IMAP server.

a LOGIN YourUsername YourPassword
This sends the username and password to the system (the “a” is a required part of the command)

a LIST “” “*”
This shows a listing of all the IMAP folders the account has

This will select the INBOX folder.  You can repalce INBOX with any folder you wish to use.

a fetch 1:* flags
This will list all the emails in the selected folder, and will also tell you the flags like “seen” or “NonJunk”.

a fetch 1 body[header]
This command lists the header information of message 1 in the selected folder.

a fetch 1 body[]
This will list the header AND the contents of message 1 in the selected folder.

a store 1 +flags deleted
This command will set message 1 to be deleted.  (NOTE: it will not delete until the expunge command has been run)

a expunge
This will delete any emails that you flagged to be deleted with the previous command

a logout
Disconnect from the IMAP server



telnet mail.yourdomain.com 25
This opens up a connection to the SMTP server

HELO client.example.com
This should be your own hostname (the computer hostname you are connecting FROM)

MAIL from: <sender@example.com>
This is the email address you want to send the test email FROM

RCPT to: <recipient@example.com>
This is the email address you are sending your test email TO

Begins the data entry for the email headers

From: sender@example.com
To: recipient@example.com
Subject: Test message
After each of these lines press enter to start the next line.  After the 3rd line, press enter twice so that it puts a blank line between the Subject, and the body of the email

This is a test message.
This is the body of the message.  Type whatever message you want here

A period on a line all by itself indicates that is the end of the email.  It will then try to send this email to the recipient from the sender email address using the data you provided in the headers above.

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