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smtp commands to test email between two servers via telnet
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telnet smtp.example.com 25 | |
Trying 203.0.113.1... | |
Connected to smtp.example.com. | |
Escape character is '^]'. | |
220 example.com running My Bitchin Mail Server 1.0.0 | |
HELO example.org | |
250 example.com hello example.org (198.51.100.1) | |
MAIL FROM:<postmaster@example.org> | |
250 2.1.5 sender OK | |
RCPT TO:<someone@example.com> | |
250 2.1.5 user someone@example.com known | |
DATA | |
354 send your message | |
To: someone@example.com | |
Subject: This is a test. | |
Hear me now? | |
. | |
250 2.6.0 message received OK | |
quit | |
221 2.0.0 example.com closing connection | |
Connection closed by foreign host. |
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The indented lines are the remote server's replies.