Tag Archives: awk

Remove/replace all characters before and after a specific character & Deal with “postfix/smtpd too many errors after UNKNOWN from unknown”

Plenty of logs on an e-mail server like the one below: Sep  3 05:31:01 web postfix/smtpd[7858]: too many errors after UNKNOWN from unknown[42.119.175.103] (These logs seem to be caused by botnets trying to send spam, or broken spam bots trying … Continue reading

Posted in Linux | Tagged , , | Leave a comment