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Telnet to a server on an ssl port


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The last post dealt with connecting to a server using telnet on a non telnet port.  This is handy for touble shooting mail issues or just checking mail without using a “proper” mail client.  In this post I’ll show you how to connect to a standard pop3 server over an ssl port.

> openssl s_client -connect

+OK Dovecot ready.

> user [email protected]


> pass password123

+OK Logged in.

> list

+OK 4 messages:
1 13151
2 6339
3 3030
4 7988

> top 1 20

This shows you the first 20 lines of the first message.  This is also useful when troubleshooting mail connection failure issues.