Tag: telnet

My SMTP cheat sheet

Today is the day when my SMTP server didn’t want me to relay mail after authentication… This is probably my fault as I may have change something without remembering it. Anyway, here the commands to use to talk SMTP to your favorite server.

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My IMAP cheat sheet

When I want to check if an IMAP server is working properly, I telnet it and run basics commands. Here are (IMAP) commands that I keep using. Connexion Either connect to the IMAP (clear text) port: # telnet FQDN 143 Or connect to the TLS IMAP port: # openssl s_client -connect FQDN:993 In both case, the server should reply something…

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