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SMTP servers of ISPs

Tips&Tricks

Send maildir mails to a remote server

without damaging the From and Subject etc.

cat somemail | formail -i "To: new@address.com" | sendmail -t

script for testing mailservers

sendEmail


Test submission

See https://halon.io/blog/how-to-test-smtp-servers-using-the-command-line/ Encode using

echo -n whatever | base64
openssl s_client -starttls smtp -crlf -connect server:587
ehlo your.host
auth login
base64 encoded username
base64 encoded password