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How To Test SMTP Services
using telnet
1. Run command prompt.
2. Type Telnet and then press ENTER.
3. At the telnet prompt, type open <SMTPServerDNSName> 25, and then press
ENTER.
4. Type helo me, and then press ENTER.
5. Type mail from:username@SMTPServerDNSName, and then press ENTER.
6. Type rcpt to:receiptnamel@ReceiptDNSName, and then press ENTER.
7. Type Data, and then press ENTER.
8. Type Subject:This is a test, and then press ENTER two times.
9. Type Testing, and then press ENTER.
10. Press ENTER, type a period (.), and then press ENTER.
11. Type quit, and then press ENTER.
Here is example result:
220 smtp.chicagotech.net Microsoft ESMTP MAIL Service, Version: 6.0.3790.
3959 ready at Sat, 7 Feb 2009 23:05:41 -0600
helo me
250 smtp.chicagotech.net Hello [10.1.10.10]
mail from:blin@smtp.chicagotech.net
250 2.1.0 blin@smtp.chicagotech.net....Sender OK
rcpt to:bob@mvps.org
250 2.1.5 bob@mvps.org
Data
354 Start mail input; end with <CRLF>.<CRLF>
Subject:This is a test
Testing
.
250 2.6.0 <SERVERCFI3cywsd6utU00000002@smtp.chicagotech.net> Queued mail
for delivery
quit
221 2.0.0 smtp.chicagotech.net Service closing transmission channel
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