Schlagwort: Postfix

SMTP Banner

Das SMTP Banner zeigt die Version des installierten Mailservers an. Check SMTP Banner echo QUIT|nc mail.mydomain.xx 25 Fake SMTP Banner Postfix vi /etc/postfix/main.cf smtpd_banner = $myhostname Microsoft ESMTP MAIL Service,

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Install DKIM

Install OpenDKIM apt update && apt -y dist-upgrade && apt -y install opendkim opendkim-tools Configure OpenDKIM vi /etc/opendkim.conf AutoRestart         Yes AutoRestartRate     10/1h SyslogSuccess       Yes LogWhy              Yes Canonicalization    relaxed/simple ExternalIgnoreList  refile:/etc/opendkim/TrustedHosts

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